Make your self defoult pre flop game plan, which is +/- unexploitable and deviate from it only with good reason, you will save a lot of money and nerves. My stats are 25/20/9 i fold to 4bet 30, fold to 3bet 45, and I rarely make pre flop adjustments, expect if there is fish in a blinds and against nits, after i made this it saved me so much time and released a lot of mental energy for post flop, I no longer think: oh I might 3bet this, or no I better call, or should I call or fold or 4bet vs 3bet, its in autopilot now.