The best method would be to reduce your access to your bankroll IMO and keeping the coins secure in the same time, keeping private keys in vaults in banks or secure locations would be the best IMO.
If you're already an adult and earning money then this method not very helpful in stopping gambling because somehow they will get the funds if they change mind to gamble again. To come out of gambling one must first mentally decide not to gamble again otherwise they will find ways to play again. After they decide then try not to use a computer for a while when your alone and spend more time with your family and friends in outdoor activities more.
Indeed. Therefore, we have to learn how to control our mind and our body. If you do not have this ability, it will be very hard to quit gambling since your mind always focus on it. The more you stay away from gambling, the more you hungry about it. I do not think that stay away from computer is a good idea because there are many fun activities on the digital world apart from gambling.