The key to cultivating a positive attitude lies in peace of mind, self-confidence and optimism. You must try to become one with yourself by respecting yourself and having faith in what you are truly capable of. Do not let the surrounding negativity pull you down. Firmly hold on to the belief that no matter how bad things get, you have what it takes to come through. Do not ever give up and be mentally prepared to fight until the end.
Understand that an eye for an eye would leave the whole world blind. Even if someone has wronged you, you should try to look past their mistake and give them another chance to show their better side. Getting even with an enemy may bring you temporary satisfaction, but it will deeply scar your conscience. The path of vengeance only leads to hatred and destruction.
When you do something good for others, stop expecting gratitude in return. Expectations make a person vulnerable to disappointments. It is also an act of selfishness and kills the whole purpose of helping others.
Instead of complaining about what you do not have, be grateful to God for what you do have. There are people out there who are in a far worse condition and situation than you can even imagine. You have so much to be thankful for.
Understand that every person has their own destiny, which determines how much they are going to get and when. If someone is more successful than you, that is how God wills it to be. You need to understand that your time will come too. Do not spend your life envying others and being impatient.
Look for ways and opportunities to help others. It will not only earn you more respect, but will also make you feel great about yourself. You will find yourself at peace.
Understand that failures are just as important as success. Learn from them and use the knowledge and experience gained to improve yourself.