its a normal feeling to push yourself a bit harder in whatever you're doing when you see others that are into the same thing with you being more profitable than yourself but you have to be matured with how you go about comparing yourself with them.
Their is no guarantee that if you stake more that you will have better result so the best thing you can do for yourself as a responsible gamer is to plan your gambling routine and the maximum minimum amount you can work with on a daily bases regardless of the turnover of the game.
You should also understand your financial strength with relation to that of the person you are comparing yourself with so you wouldn't try to use your average income to make a comparison with someone that is already established in a business or firm and that can withstand certain loss.
It is indeed a natural thing, when someone does the same thing but has a difference in profit, and someone who sees other people get a big profit of course it can affect them, because it is a natural thing especially things related to profit of course everyone wants a big profit. But what must be remembered is that luck is different, so even if they follow others by placing large bets too, it does not guarantee that they will get a profitable victory.
It is true that you said that the best for yourself is to be a responsible player, this needs to be considered, because many gamblers are not responsible for what they do which leads them to huge losses. And indeed we also have to look at our financial strength, if it is not able to place a bigger bet it is better not to be rash, because luck can be on anyone's side, and does not look at the amount of bets, so even though we bet with a small amount if we are lucky, we will definitely get a profitable win. Although it can affect but it is better to introspect yourself first, so that nothing happens that is not wanted.