I turned 500 into 6800 in a week. Albeit most of that was on a 5 game 6.5 teaser in the NFL. That was 2800 right there. The rest I won on NHL. It's awesome. Done it before too many times.
I think the problem with you is(don't mind me if I offend you I don't mean to) once you get upto a big balance you start to feel invincible and greedy. You have more so you bet more. You're thinking, hey I turned 300 into 3000 why not 3000 into 30000! You're probably on a high at that point. So maybe just take a step back and after a deep breath compose yourself.
As for the problem with chasing and getting obsessed after one loss even though you might have won like 5 in a row, it's just will power and discipline dude. You just have to tell yourself that you aren't going to let it rattle you and that you will take the loss and get back to it tomorrow. Not tonight on the last game. Not on the halftime bet on the late game, or the first thing you can bet on tomorrow. When you see a good bet or are at least over that loss and feeling of wanting to get it back right away, then go ahead and make your next bet. It's all will power.
I didn't think to myself, wow, I turned 500 into 6800, I'm going to go big and try to turn it into 25000 or something because it's house money anyways. No. That's my 6800 at this point and I am not going to give it back making stupid bets trying to hit a jackpot.
Okay here's your bright side....each and every one of us has turned a little pot into a huge balance. A few hundred into 5000 or more. My best was 250 into 8000 in 3 weeks. We've all done it and we will all do it again. It's what you do with it that counts. Don't get complacent or reckless when you have lots of money to throw around in your offshore account.
More good news. How long does it really take to turn a few hundred into a few thousand? Not long at all dude. You have 500. You bet a couple of safe faves in NBA to turn 500 into 900. Now you take that 900 and wait for a solid halftime bet. Like Bulls vs Clippers the other day. That was an easy choice for me. Clippers were shooting like 60 percent at the half but were down by 1 or 2 points I think. The clear choice was Bulls at only .5 2nd half. You can go all in if you want or half in and now you are at say almost 2g? You take the Redwings at home when rested even if they are -200 and go all in and now you got 3000. There you go. A few hundred into 3000 in like 2 or 3 days(yes I just read out an example of what I actually did haha. Not the exact numbers but you get the point)
I'm busy with stuff but I will look you up if you want in a week or so and I'll start a thread. We'll turn 500 into 5000 no problem. I'll post my tickets and plays. It'll be fun. Cheer up. There will always be games to bet on and money is always abundant(even if not for some, as we just discussed, it doesn't take much to make a lot.)
That's my rambling while on my way to getting more drunk.. Take care man.