Okay
Bad bankroll management is the downfall of the majority of reasonable players attempting to come up through the stakes. I know the feeling- you've ran below EV and the instinct reaction is just to bump up the stakes, turning a small loss into a disaster. It feels really bad and of course you know in your right mind that tilting on higher stakes is the wrong thing to do. Slowly grinding upwards in things like HUSnGs is MUCH more satisfying than zooming up and down and then inevitably going broke at some point. I think there are a few things that you can do about this.
1. The most straightforward thing you can do is to actively block yourself from playing higher stakes (not sure if this is available on all sites but definitely on Stars you can go Tools --> Responsible Gambling --> Restrict Tournament Buyin). This means that if you do ever tilt, you won't ever be able to lose your whole roll in one go, and I found it very useful in instances when I did tilt in the past.
2. Anther thing you can do to try to control the stakes you play at is to track and share your results. If you start up a thread here on CardsChat for heads up SnGs and write a clear bankroll management plan as you go up then it will feel more rewarding for you to be able to share your results when you do win, and if you tilt out then you will have to share that as well. I think it should help you from tilting out and going above your limits. Also, HUSnGs are very easy to track using PokerTracker or just Excel if you don't want to buy tracking software so they're a good format to start a thread on.
3. Another helpful thing might be to look at how professionals manage their money, and to read a few articles on bankroll management. If you look at and professional tournament player's graph, you will be able to see that they go up and down a lot- sometimes even by as much as 1000 buyins if they are playing MTTs! Understand that dealing with loss is a big part of the game and that you will only be able to win if you are able to lose as well. Read up on what is a reasonable BRM plan for what you are trying to do and then come up with a clear and exact plan for how you want to manage your money. If you don't stick to it at any point then I would suggest that the best thing to do would be to take a break for a few days to avoid tilt.
4. The final thing that I would do is to really study your game. If you are able to improve at the game then you will be able to have more of a motivation to keep your money and not tilt at any point. A lot of new players think that the best thing to do to improve their game is just to play as much as possible and put in a load of volume. This is incorrect. I would suggest looking at professional players like DougPolkPoker or xflixx on Twitch and how they play, reading poker strategy related articles and looking through your hands after you've played them to see if there were points at which you could have played better (share them in the tourney hand analysis here on CardsChat as well for help on hands you have played). I don't know what stage you are at or how good of a player you are but I do think that people often underestimate the amount of work you need to do to become a solidly winning player. I think that would help you to be able to manage your money as well
Personally I managed to grind $0 up to over $400 in just over two months as part of a $0 to $25,000 challenge using mostly MTTs (
https://www.cardschat.com/forum/pok...46/0-25000-epic-battle-through-stakes-308543/) although I'm down a bit since then. It still feels really good to be able to actually make a little bit of cash on the side from poker though.
Hope that helped! Good luck!!