1. Longer timeframes.
Higher time frames are more profitable ?!?
Who told you that?
2. Scale into winners.
Yes.
3. Set targets.
Yes and no.
If you are trend-following, setting an artificial target will severely limit your profits in the long run.
4. Have reasonable stops. (be willing to lose a bit)
There is no such thing as a "reasonable" stop. Your optimal stop must be dictated by your backtest, period.
