Then 20 within 3 months. Leaving you with a long term goal of 50. Set little goals along the way to help you achieve your ultimate goal. Go slow, be patient and believe you can do it. The final thing is to ensure you have a finishing date.
Time is a crucial factor.
Without this you could be floating around for years not achieving a thing. Put pressure on yourself to work hard, stay focused and achieve. There is no better feeling in the world, maybe that is a bit of an exaggeration, than achieving something you never thought possible. Get to the gym, go to the bank, do whatever you have to do to get the ball rolling.