Q: Rabbi, Kabbalah does not deal with physically observing Mitzvot. But if I want to change, push myself forward, and rise spiritually can I use the system of fasting for that purpose, such as 5 days of fasting, then a break and so on continuously? Or is it of no use at all? Naturally, in addition to the fasting, there would be Kabbalah studies, listening to lessons, etc…
A: Fasting will never help you improve yourself or become spiritual. It will only make you think of your “spirituality,” nurture your vanity, and make you demand a reward from the Creator …
I suggest you have a big snack and move forward! Eat right, keep fit and study Kabbalah.