If you realized how powerful your thoughts are, you would never think a negative thought. Learn to get in touch with the silence within yourself and know that everything in life has a purpose.
Life just happens this way,
some things goes your way,
and most of the things the other way,
but see the life with a view of an optimist,
to live the life to its fullest.
The way I see it is you have two choices in life; you can be grateful for everything life has given you or you can be resentful for everything life has done to you. Your degree of happiness is directly proportional to the conviction of your choice