here is what i think, i played 25000 hands this month on micro stakes, also did a couple of double up or nothing and i can understand what you feel. if you want to play micro stakes i suggest you play more than 1 table, try 6 for the start. you will than realise you win at some table, lose at some tables. very big thing here, in order to not be called every sigle time by 67o you have to raise big, not the standard 3-4 BB raise, raise about 10 BB, gve it a try, see how it goes.
about small pairs, i suggest you ttry to limp in and catch a set, if it does not work, drop the hand.
the more hands you play, the better you become with dealing with tilt.
dont buy in for too much, buy in for 100BB, and when you enter a hand, prety much raise big (unless you have a small pair, and maybe u want to see a flop cheap). when you start with a good hand, regardless of what come on the flop, vs 1 player, BET.
when you have QQ KK AA AK prety much try to get your money in preflop if posible.
i hope this works, defenetly works for me.