I agree with Giselle. Saying "Good", "Yes" or "Okay" are all just as effecive as clicker training. (Good would probably be the best b/c we humans tend to say yes and okay A LOT!). You can actually use any word you want.

Some dogs find the clicker noise a bit harsh. If you want to try it again, try using it at first behind your back or in a pocket. It muffles the noise a bit.

Good luck!