Learn

1a) Money management, 2% per trade is high enough if you think 2% is too small probably your capital is too small.

1b) Psychology, staring at your chart all days and revenge trading can't make your capital double or triple.

3) Find any technique and time-frame that suite your time.

Commonly newbie straight learn no. 3 

ok lah spoon feed you a bit...lol

2% is risk amount per trade of your account size

$2000 x 2% = $40, that you are willing to lose if stoploss

this $40, together with your entry and sl price, determines your lot size

example based on account type...say $0.1 gold price per lot = $10, then your $40 = $0.4 price...
-- long at $1600.4, stoploss at $1600.0 ($0.4), you buy 1 lot
-- long at $1600.4, stoploss at $1600.2 ($0.2), you can buy 2 lots
-- long at $1600.4, stoploss at $1599.6 ($0.8), you can only buy 0.5 lot

sl need to put at sensible levels...put too close always get hit...put too far lot size becomes 0.0000001...no sl noobs wipeout 100% guaranteed

btw...good brokers will have learning pages on these...and also lot size and leverage calculators