I don't waste time, no computer games at all etc. if I have free time I spend it e.g by watching videos on how to dress, I'm unlikely to burn out as I've been this way for quite some time.

Will lets say 30 minutes meditating be more beneficial for me than lets say 30 minutes spent studying? How long until I start noticing benefits, 2 weeks, month, 3 months?

Should I use an app? Got prescribed (no joke, by nhs gp, got paid version for free) this https://play.google.com/store/apps/details?id=uk.co.positiverewards.feelgood but I find it difficult to stick to it, as I find it patronising. Entire course will take me ~23 hours, over 60 days, if done from the beginning to the end...