re: Poker & Hand Question
On the turn, you were looking for any K (3 outs), J (3 outs), 8 (4 outs) or diamond (8 outs because one of the 8's is a diamond and one of the J's is a diamond), for a total of 18 cards in the deck that help you on the turn, and you were getting 4:1 on your money. But since the majority of those "outs" don't actually give you a strong hand yet, you should have folded if you had no intention of making a move to steal the pot on the turn or river if you miss.
That being said, you made the call and turned a straight and flush draw, giving you 15 outs plus any K (3 outs) if you think it will win the pot. Note: a J no longer helps you because it creates a dangerous board for your weak hand. You were getting over 2:1 on your money, so the call is correct.
The key is in bold, though. If you planned on folding in the instance that your hand does not improve on the turn or river, you should have just folded the flop.