1. They doubt they have what it takes.
Highly ineffective people are tormented by self-doubt. They lack
confidence. They are never sure that they have what it takes to be
successful. They confuse lack of experience with lack of ability. They see
challenges as threats, and hear feedback as criticism. They prefer the
familiar to the unknown, and the security of not trying to the risk of
failing—until one day they stop looking for opportunities altogether.
2. They wait too long to get started.
Highly ineffective people procrastinate a lot. And the longer they wait to
get something done, the higher the chances that it will never get done.
They perceive time as endless and forgiving, without realizing that time
—unlike money—is the only resource that you cannot recover when you
lose it. Those who are able to meet deadlines, even at the last minute,
develop a false sense of confidence that they can "get things done." They
don’t understand, however, that getting things done is very different
from getting things done well.
3. They lose their patience faster.
Highly ineffective people don’t like to wait too long. They are fans of
quick results: Get rich quick. Get thin quick. Get smart quick. And they
get disappointed quick when they don’t get results fast. They constantly
look for shortcuts: Which highway lane is the fastest? Which grocery
store line is the shortest? Which bank teller is the quickest? They
constantly fight the clock, trying to get things done fast rather than well.
But by trading quality for speed, they eventually spend more time fixing
errors than making progress.
4. They multitask shamelessly.
Highly ineffective people are unable to focus on one thing at a time.
They put too much on their plate and they try to eat it all at once. They
talk to you while texting someone else. They listen in on a conference
call while building their to-do list for the week. Their idea of making
plans is to overbook themselves solid. At the end of the day, they feel
physically and mentally exhausted, but without much to show for it all.
5. They want change without having to change .
Highly ineffective people welcome change but don’t embrace it. They
desperately want a change in their life, but resist doing what it takes.
They object to new ideas and oppose new practices. They avoid learning
new techniques or applying new technologies. And they are blind to
different points of view. They are persistent, but they become stubborn.
Eventually, they cross they line between persevering and perseverating.
They embody the phrase, "You can’t teach an old dog new tricks."
6. They strive for perfection.
Highly ineffective people work hard, but waste their efforts on details—
often, details that no one else cares about—and miss the main point.
They are more interested in coming up with a "perfect" idea than a
useful one. They are more invested in creating a flawless product than
learning what to do to improve it. They care more about avoiding
making mistakes than learning from them and growing. As a result,
their pursuit of goals becomes a wild goose chase.
7. They complain a lot.
Highly ineffective people have a pessimistic view on life. They spend
more time and energy complaining about what is wrong, blaming others
for it, and feeling sorry for themselves, than focusing on ways to make
things better. They can make mountains out of molehills, and they also
like to believe that they have no responsibility whatsoever for the state
of their own lives.

source: https://www.psychologytoday.com/blog/smashing-the-brainblocks/201508/7-habits-highly-ineffective-people
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