That's one of the things I hope to accomplish with this H.O.T system, Heavy. Part of it will implement trading accounts as a percentage rather than a monetary amount.
If we look at entries, gains, and losses as a percentage, it really helps to keep us from going in too large on trades. 1% to 2% on trade entries really takes the stress away from trading and keeps the account from getting strained from early or even bad entries.
I've tried the big entries and they don't work in the long run. Small entries make gains slower but, more importantly, they keep losses small. Plus, it keeps plenty of dry powder available for entries on other pairs simultaneously while we may be waiting for a particular trade to pan out.
Overall in my trading, I'd say this was probably the hardest thing for me to learn. It's always so tempting to go for the big win but ultimately it's winds up blowing up my account. I'm a slow learner...LOL!