How to overcome self deficiencies

There are many types of deficiencies in overself.
As we know every person have some deficiencies.Some people have misbehavior deficiencies, so we should improve these deficiencies without taking any tension. If we take any decision then we can achieved that target, because every thing is possible if we try. Some people have a low confidence, as in real people have ability of doing any work. But due to deficiency in their confidence, they could not accomplish the task, because they feel it is not possible for them. Some people use to tell a lie and it’s a big deficiency.People should avoid telling a lie and should try to speak truth.Some people have bad habit that they always comments the others characters, so we should finish the these deficiencies. We need to begin sharp self-awareness to achieve needed performance improvements.