This likely applies to games, and to the real world. In games, you try to heal yourself, and yet you're prone to take more damage than what you can restore. Whereas, in the real world, the way you act can heavily determine your reputation toward others.
Fact: It applies to everything.
In Smash, unless you ate a Heart Container or used a Fairy Bottle, sometimes Maxim Tomato, nobody cares as most can just combo you hella back again. In fact, you might be reducing your damage so the combos that shouldn't work will work again, and you take more damage because of that.
In Puzzle and Dragons: Super Mario Edition, it's hard to waste turns when you have to bring a certain member who specializes in changing orbs to something that normally does not exist in the said course (See: W1-4) when your team is just so powerful (Even if you bring weaklings, those enemies are still fragile) that you can accidentically finish them in one turn (Especially if it's a 3 color course).
In most action games, it's almost always easier to take damage than heal yourself.
In relationship, it's hard and time consuming to build love to someone you like. Meanwhile, do one thing wrong and the entire thing falls apart.
In internet, if you are a troll, don't expect people to just forgive you like that, especially the ones who you have insulted.
Basically, a bottle of milk gets ruined by just a single droplet of poison. A tall wooden wall gets ruined by just a spark of fire. A reputation gets ruined by just a single mistake.
Life is hard bruh.