imo healing = dropping and freeing yourself from the limitations/past/thoughts/beliefs you're holding onto, it's actually within the same vein. So if you genuinely are on this path and want to realize your Self, then yes it helps a lot. Lester himself realized his true self through healing his past too (this healed his physical ailments too!), by correcting all thoughts and feelings into love :) (although dropping limitations can be done many different ways so you don't have to do it his way necessarily, do whatever works best for you)