Accept the way things are and the way people are. You have to understand that not everything is going to be the way you want it to be. If you cannot accept reality you will feel very frustrated with your life. Many people will try to change something that they cannot control, and when it doesnt work out for them they feel miserable. Once you can accept reality including the challenges that you are faced with, you will be able to be more calm and think more clearly about how to get a step further towards your goals every day.