How do you avoid developing tolerance to marijuana?

The best way . . . . . . . . Is not to use it at all. Most chronic users report tolerance to the euphoric effects & need for increased frequency or increased amount of marijuana to get the same effect. Besides potentially inducing anxiety, panic, paranoia, and dysphoria, one's memory & motivation can be "off" even after the smoke is gone. Decreases in sperm count have also been seen, along with lung complications.
Stop using the stuff. Tolerance develops as you keep using the drug. Stop now before it happens.