For me it was more the psychology when I started out. So, I calculated my risk based on a account size of $50 = tiny. Now, once I have doubled the $50 to $100, it's time to increase the risk. Doubled again, and so on and so on.....until I'd withdrawn the full amount of my deposit. So from this point on, I'm trading on pure profit......and I can "pull the trigger" as my trading plan specifies, without hesitation. It does, indeed, become more difficult as the amounts become larger - an inevitable psychological consequence. These days I sweep my profits on a monthly basis, and only leave about half to grow the account. When I started, I allowed the full amount to compound - again, it's a preference dictated by psychology.
Note that I said an AVERAGE of 15% per day. There were days that I broke even, and days I took a small loss. But, I averaged around 15% per day. And, I'm not kidding about waiting for the perfect setup. If it doesn't fit with my plan, I don't trade. If there is alot of news, particularly high to medium impact, I don't trade. If a trade goes against me, I take my licks, and obey my stoploss limitations. If a trade is going in my favor, I'm adding positions, taking partial profits, and siphoning as many pips as possible out of the market. Trading is certainly less stressful for me these days.....
Note that I said an AVERAGE of 15% per day. There were days that I broke even, and days I took a small loss. But, I averaged around 15% per day. And, I'm not kidding about waiting for the perfect setup. If it doesn't fit with my plan, I don't trade. If there is alot of news, particularly high to medium impact, I don't trade. If a trade goes against me, I take my licks, and obey my stoploss limitations. If a trade is going in my favor, I'm adding positions, taking partial profits, and siphoning as many pips as possible out of the market. Trading is certainly less stressful for me these days.....