a.Some people succeed in making their dreams come true, because they believe in their dreams, but other people don't, so they won't make their dreams come true.
b.For some people life is boring and monotonous because they don't dream, don't laugh often,and believe that everything is boring...
c.One should change oneself to live in a better world ,because if one observes that he is not accepted anywhere because of something, he shoud change that thing, because he can't change everyone else...
d.I tell myself "I think I can" really often, and it works, because I start being confident again...
e.Yes, I remember when I couldn't do an exercise at a test, because I was always saying " I can't do this,I don't know how to do this",and suddenly I said" Wait...I think I can solve it..." and I did...