How do you control yourself or just quit ?

[dexter77]

I don't play casinos but I am invested in sports gambling. There have been number of instances where I continue making good predictions in top leagues, but somehow when I go up 2-3x my balance. I get this confidence that I can't be wrong or even if I am I'll recover it in the next bet.

These situations create a long losing streak and then I am left with nothing !! 

I have never incurred losses in betting before, now I have lost all the profits I made over the past year (Yeah I did use $$ made from it) but now you can say I am back to 0, and lost some more 10-15% of my savings !? 

How do I comeback or even quit, I feel like I am trapped once in a week or two I comeback make a good run and then lose it all.