Greatest illusion of life is that we put our work on tomorrow and we do not do work at that time .this put burden on our head when we start work tomorrow because of this burden pressure we can not do our work effectively this illusion is due to we think that there is much time for us and we can do it. this thing put bad impression on our personality. 

Another illusion of life is that we do not plan for long term we plan for temporary success this only gives small advantages we should go for long term planing we should think for other coming generation.

Most important illusion of life is that we do not think what we are going to speak and we speak that is very bad thing for us we should think before speaking and care what we are going to speak.

And another illusion is that some time we get angry on some one and we break our relation this is unnecessary we should go with all friends and relatives with good relation and help them in their need this will improves our personality .we should keep these point in our practical life and use them.