For me which I already tried and tested on to myself is to keep yourself busy all the times. Be it at work or just read a good motivational book. Spending time with your family and with your friends while setting up goals can also be a good start. The people that surrounds you can also help you on times that you suddenly think of going back into gambling. You can talk to them and they will definitely help you since they know you more and are the closest people you can count on.