This is normal for greedy gamblers. You get more excited to bet when you’re in a winning streak, I think everyone does. The problem is, due to your overconfidence that you will consistently hit a huge amount, you tend to lose control of your funds, until you end up realizing that all your profits have turned into losses already, and you can’t do nothing about it but to regret and blame yourself, wishing you immediately cashout your winning amount. At least you learned your lesson as well.
The first part of your comment is problematic and defer from my concept I gambling. I believe that luck is a key factor in gambling and when you are lucky to be in a winning streak, you have to make good use of such opportunities because it rarely come. A gambler ought to be excited and motivated to gamble when in a winning streak to be able to get as much as he can get until he senses that that period of easy winning have passed, then he can either take a break and withdraw his balance or reduce the betting amount by over 50% to wait the bad periods out.