Damn old book trick haha, martingale strategy. Actually, it's a good one, make a target for your profit each day and 10% per day it's a good one and continue tomorrow.
Well, it's always good to set yourself a target of when to stop each day. It basically makes you feel more in control of your gambling game and it makes gambling fun. However in the end the house always wins.
This could be considered as a trick but not a strategy that works 100%.