You may realize that after the 10-minute wait, you no longer really want that indulgence. Furthermore, you may also realize that your short-lived indulgence is definitely not worth giving up that long-term goal you have already worked so hard for.
Wait 10 minutes before indulging in a temptation.
During this ten minutes, think about your long-term goal that will be affected if you indulge in your temptation. If after 10 minutes you still want it, you can have it.
Imagine your long-term goal as if you have already achieved it.
Picture your future self with the benefits of having achieved your long-term goal.
Consider if you are willing to give up that long-term goal for the short-lived indulgence.