The Gita in Chapter 6 says that a wise person is on the path to God. Such persons are calm, fearless, think of God, and are measured in all their activities. They are careful to eat, sleep, work, and relax moderately: neither too much nor too little. Those who practice moderation and succeed in behaving on an even keel attain happiness and freedom from sin.
On the other hand, a respected colleague of mine once advised that everything should be practiced in moderation, even moderation. This notion is implicit in the term “moderation” which suggests that once in a while we can stray and binge a little. Occasionally, we should let ourselves over or under-eat or sleep, or work or play or whatever. We will rejoice in the excess and then regret the aftermath. That should lead to our reining ourselves in and once again returning to moderation. Perhaps from there, we can eventually progress toward a state of godliness.
See The Gita, A New Translation of Hindu Sacred Scripture, by Irina Gajjar