At my age,I wouldn’t call it “late”, however, had I learnt these things earlier in my life, I would have been a better person today:

1)Unless there is something seriously broken, your family is the only entity in your life which is not replaceable. They would always be there for you in your best times and your worst. Reciprocate that. Consider others temporary. It will save you a lot of pain down the line.
2) Your health is of outmost importance, followed by your ambition and then, money. It’s simple, watch what you eat, work out, have a purpose in life, and manage wealth wisely. You will lead a fullfiling life.
3)Soul Mate” and “True love” is a false concept which is overly glorified by movies and music. It does not work in the real world. Period. Two compatible people either decide to walk the road together or they don’t, that’s it. Karma may or may not work. Most of the times it won’t. No one owes you anything and no two people are “meant”to be together. Seriously, the earlier you learn this, the better.

4)There is only one person who deserves to be on a high pedestal in your life- thats you. Value yourself the most. Only then can it be extended to others. Take life seriously, but at the same time find happiness in small things. You live once, make sure you don’t waste your time and energy where it’s not needed.

When you help others, you likewise help yourself