Think positive. Whether you're doing anything important at least to make your life happy is to think positive, think positive because it will make you think, but a good thing.
You do not think that anything important thing is to make your life happy is to think positive because positive thinking will make you think good things.
Positive thinking, no matter what you do, what important thing to make your life happy is to think positive because of positive thinking will make you think of something nice.