If somone open reise big before you or 3bet and you are sure he wants to play for whole stack go all in,its never mistake to do that with KK or AA even if you lose..becouse you have his 99,TT,JJ on two outs not to mentiod AQ,AK type of hands.If you are first to act open reise,go for value on all streets ofc there are some texture that can be dangours be cerfull on those....And in situations where you are lets say on button first to speak and you have 2 short guys on blinds try to induce by limping or minreising...If you are on small blind and first to act limp for induce is good play.