Your attitude is a choice. If you desire to make your day a masterpiece, then you need to have a great attitude. If its not good now, you need to change it. Make the decision. Here is how:

Take Responsibility For Your Attitude
Firstly, you must understand that it is your job to care for your attitude. No one can do that for you.

Decide To Change Your Bad Attitude Areas
I have read the peanuts comic strip for years, and i have always been a big fan. I recall one strip in which lucy announces, "Boy, do i feel crabby."
Her little brother, Linus, always anxious to relieve tension at home, responds, "Maybe i can be of help. Why don't you just take my place here in front of the T.V while i go and fix you a nice snack? Sometimes we all need a little pampering to help us feel better." Then Linus brings her a sandwich, a few chocolate chip cookies, and some milk.
"Now, is there anything else i can get you?" he asks. "Is there anything i haven't thought of?"
"Yes, there is one thing you haven't thought of," Lucy answers. And then she suddenly screams, " I don'y want to feel better!"
For the many years the late Charles Schulz drew peanuts, that always seems to be one of Lucy's problems. She didn't want to change in the areas where she had a bad attitude-and she had a lot of them!
Many people are like her. I mentioned that there are things in your life you cannot choose, such as your parents, where you were born, or your race. But your attitude is something you can change. And just about everybody has at least few areas in their thinking that could use some help. If you want to have a better day. then you need to go after those areas.

Think, Act, Talk, and Conduct Yourself Like A Person You Want To Become
If you have been to any kind of class reunion ten or more years after graduation, then you've probably been surprised by the transformation of one of your former classmates-the misfit who became a famous lawyer, the plane Jane who blossomed into a movie star, or the geek who founded the a major corporation. How do such transformations occur? Those people changed how they thought of themselves. You saw them as they were (or how you thought they were). They saw themselves as they could be. Then they learn to act like and acquire the skills of the people they wanted to be. The transformation usually takes time; often its barely noticeable to those who see them everyday (just as parents don't see changes in babies the way others do). But to someone who hasn't seen them in ten, twenty, or thirty years, the transformation seems miraculous, like butterfly from a caterpillar.
If you desire to change yourself, then start with your mind. Believe you can improve, that you can change into the person you desire to be. Ralph Waldo Emerson said, "What lies behind us and what lies before us are tiny matters compared ti what lies within us". If your thinking changes, then everything else can follow.

Place A High Value On People
One of the secrets of maintaining good attitude is valuing people. You can't dislike people and have a good attitude at the same time. Think about it: Have you ever met anyone who always treat people badly but had a positive attitude? Likewise, you cannot have a bad attitude and encourage others at the same time. Encouraging others means helping people, looking for the best in them, and trying to bring out their positive qualities. That process drives negative thoughts out of your head.
Your interaction with others sets the tone of your day. Its like the music of your life. When your interaction with others is poor, its like having to listen to cacophonous music. But when you place a high value on people and you treat them well, its like listening to a sweet melody as you go through your day.

Develop A High Appreciation For Life
Have you ever known people who complain about everything? Their soup is too hot. Their bed is too cold. Their vacation is too short. Their pay is too low. You sit side by side with them at a magnificent banquet, and while you enjoy every morsel, they tell you whats wrong with each and every dish. Such people don't appreciate life, no matter how good it gets.
A friend e-mailed me the story of a very "together" and independent ninety-two-year-old lady who was moving into a nursing home. Since she legally blind and her husband of seventy-years had passed away, the move was her only option. She waited in the lobby of the facility for a long time before finally being told that her room was ready. As she was escorted down the corridor, her attendant described the room, down to the curtains hung on the windows.

"I love it," the elderly lady enthusted.
"But you haven't seen the room yet. Just wait, "the attendant responded.
"That doesn't have anything to do with it," she replied.
"Happiness is what you what you decide on ahead of time. Whether i like my room or not doesn't depend on how the furniture is arranged. Its how i arrange my mind."

Conclusion
Appreciation isn't a matter of taste or sophistication. Its a matter of perspective. John Wooden said, "Things turns out best for the people who make the best of the way things turn out." The place to start is with the little things. If you can learn to appreciate them and be grateful, you will appreciate the big things as well as everything in between.