The is a old saying that I take to heart. What you think you become. If I am a negative person I will tend to do negative things. This won't allow be to tap on the positive aspects of life.
Only surround yourself with people who will lift you higher.
One way to stay positive is to be around people who give you positive encouragement to do better. It is not as bad as it may seem as long as you stay positive and focus on your goals. Also having people support your goals and providing a positive lift is what will make life better.