There is such an amazing theory of crab bucket theory - "bucket theory with crabs". She says that the crabs are so stupid that they can not understand one simple thing - individually each of them would easily get out of the bucket, but it's worth one to try as his brethren begin to cling to it, and thus pull back .
When you try to stop smoking, and friends say "you can not do anything, you can not" and hold out a cigarette - crab bucket. You are going to the second higher education, and your colleagues are surprised, and "carefully" say "yes, you're tired at work, why do you need extra work" - crab bucket. When parents tell you that you're a loser and nothing in your life will work out - crab bucket.
And there's nothing to be done about it, it's human nature, but you can change one thing - to become stronger than a bucket, to go ahead, no matter what, even at the moment when hundreds of people are dragging you down.
