Another suggestion.
Stick posters with positive quotes and words in your room. Make sure that it's the first thing you see when you wake up, last thing you see before you sleep and put them at strategic positions where you will pass by very often.
Out of sight, out of mind. But if you keep seeing such affirmative and positive words, it's hard not for your brain to react to them, even if you don't consciously memorise them, but your subconscious mind would have photocopied the words and slowly but surely implant them into your brain.
Hope this works
