Sometimes, being a profitable punter means knowing your limits, and choosing a strategy that works within those limits.
This might mean settling for a strategy with a lower return on investment, but higher strike rate. If it helps you to avoid quitting or chasing losses, and gets your into profit, it's a worthwhile compromise.
With practise, you may also be able to improve your ability to handle losing runs...
You could try paper trading a low strike-rate, high odds strategy for a few months, and pay attention to the losing runs. If you think you can handle them, move onto small stakes and gradually increase them over time.
Emotional detachment from short term losses comes naturally to some, but not to others. As someone in the latter camp, I have definitely went beyond my limits, lost my grip and fell quite a number of times in the past. But once I'd come to terms with those limits, I was able to start profiting, and eventually even learned to handle the longer losing runs too.
This is what betting investment is all about; forging an iron-will, and using it to remain calm during times of adversity.
Developing an "investors mindset" can help you to maximise your rewards, while protecting yourself from unnecessary risk.