Must admit I struggled a bit earlier with this too regarding the short odds lays, my bank took a whopping great hit and must have been seeing stars at one point Since then however it has indeed come back to a healthier balance but still technically under the balance that I started with but I am not too worried.
After having some chats with the horse racing whisperer @John-Folan I personally think that working on the mindset side of things is huge. Now I'm not trying to sound like one of these motivational videos you see on youtube (if you or anyone else has fallen into that rabbit hole of watching loads of motivation videos, you'll know what I mean ) but what helped me was changing my perspective; looking at this type of trading as a longer term thing and not (like I was at the start) thinking I could withdraw profit nearly every week.
I can't speak too much about footy trades as its not something I do...yet... but as far as the short odds lays, the way I see it, bookies have been cashing in laying horses forever so in my view, I reckon long term thinking is the way to go.
Hope this unintentional ramble is of some help pal