I know it depends on players, chip stack, blinds etc, but what are the hands you will call with?

I get the feeling I don't play with enough hands, as I usually only play if both my cards are 10 or over (unless I have pockets of course) or if I have a suited Ace. Am I taking myself out of pots because I won't play the lesser hands? And when is the right time to play the lesser hands?

I'm on a very bad losing streak atm, I can't take much more.

Any help would be much appreciated.