Most of you have the habit of starting something because you were interested in that particular thing, only to stop after a while.
Why is that?
Because you lack the desire to achieve them. You need an aim. If there is no aim or desire, then you can't be motivated, no matter what.
Even when you have the desire and aim, you can't do anything straight. Why?
Because you lack enthusiasm.
So do what you always do. Try, try and try. Try harder. Till you achieve it. Don't give up. It is in human nature to make mistakes but you should learn from them. So find out why you lack the motivation and enthusiasm and give your best shot.
I am sure you will achieve success with your perseverance.
There might be people who discourage you, ignore them and do your part. Because it is very easy to be lazy and goof around but hard to achieve.
Take the risk, make effort and succeed!