Complaining is the pastime of the mind engrossed in petty selfishness.
Whole things start with the mind. If mind is not purified then the words, through the words and through the body we will be committing sins and offences.
It is a natural tendency of mind to yield to maya. But it is our duty to take control of the mind and save it from succumbing to this illusive energy.
Mind always searches some reason to be dissatisfied.
Always go beyond the mind's limitations. If you do what your mind says you can, you will not end up doing anything.
Whether your mind is your best friend or worst enemy – know for sure that he is here to stay. So you had better get to know him!