There it is a solution of negative thoughts and it almost worked all the time. For example:
•Negative thought: "I don't have a bright future". Positive thought: "I have a very bright future"
•Negative thought: "I have no qualities to be proud of". Positive thought: "I have so many qualities to be proud of"
•Replace all negative thoughts with positive ones. If you practice daily this in your life you will be definitely a positive person because doing this trick it trains your mind to filter thought and giving permissions to only positive thoughts.