If you are in Zugzwang, by definition, there is nothing you can do, because any possible move leads to a disadvantage.
Most typically Zugzwang appears in endgames with few pieces, particularly in pawn only endgames where is is used as a very common technique. I believe that if you study pawn endgames you should encounter it very often and get very familiar with it, so that you can keep it at the back of your mind when doing calculations.
I would not focus my endgame on avoiding Zugzwang as there are usually other things to take into account as well.