Get a plan, follow the plan. There should never be a term of over trading. You follow and react, simple as that. If your looking for .05% gain a month, then it will take a long time. Im not going to get all into my trading thoughts, mostly everyone here know my stance on that, but trading with a Money management plan is perimont to any business and any trading plan. Learn to manage losses, and take your signal as oftain as you can.
Its possible to double your money every other day. or it can take 5 years like said.
Trade the biggest size your broker will allow you too. Dont measure risk by lack of preparation for each trade you make. If your going to trade, then trade with a vengeance every single time.
Chip away, like cutting down a big tree, calculated chunk by calculated chunk. You wont double the account day making 3 trades a week, unless your trading GBPNZD, but the pair is to dangerous with market maker brokers.
So, i suggest you find a pair that you can chip, chip, chip, and stick and move, taking small profits off the table often.
Take for example, EURGBP.. I Love this pair. Max units per trade, you need 8 pips to scrap 5%...
But a nice run of taking 3 pips on each signal, consistently, and paced you should be around 35% on every 22 trades or so.
You have to be right tho in your assumptions as often as you can, As with any trading style, the losses is what sets you back.