World's most profitable and easy to learn rule of thumb for microlimit:
Commit this to memory; maybe put a
post it note on your monitor:
Your opponent has an ace.
So you're playing KQs and
raise preflop.
Flop comes 59Jr and opponent bets. You
call and
catch a K on the
turn. Opponent bets and you
raise. Opponent calls. Cool. And the
river is an A. Opponent bets.
It's a good time to look at your
post it note. Does it make sense that opp would bet an
unimproved A (with maybe a 6
kicker) with that board? No. That heshe would then
call a
raise on that
turn with just one
overcard? No.
Nevertheless:
Your opponent has an ace. That's what heshe has. So you can stop wondering about it.
This will save you some heartache I think.