Doing something regularly and consistently can eventually turnout to be a routine and habit. Habit when its eaten deep into our minds can become automatism and hard to be changed. Our thoughts can be liken to that. The more you think of something positive, the better you will understand and see good changes in your life. Thoughts are powerful and are like magnetic forces that tend to attract, and whatever you think of will likely come to manifestation.
If your thoughts are negative and uncivilized, you will experience some kind of negative progress in your life because so like attract like energy. Be careful of what you think and try finding what could influence you in a positive way. This could be by substituting those things that can weigh you down negatively and replacing them with things that inspires you; reading inspirational books, meeting motivational speakers. They may be of help in training your mind to be positive and at the same time you learn new ideas and strategies of doing something.
Focus on things that are positive and surround yourself with positive minded people. Do not take the mistake you make as a failure instead bear in mind that it just a stepping stone to your success. You can learn a lot from people around you by ignoring their flaws and focusing on the things that make them to succeed. Your mind is a creative engine and a will power. There is so much good you can achieve when channeling your mind in a positive direction.