@jitendrabagaria786@ I only mentioned YouTube because it seemed from your post that you enjoyed using it, and it can be a great source of information and learning. But I also understand what you mean by having no energy left, I also feel the same way most of the time. Having recently finished a diploma I have no energy left to send out resumes, etc etc. I regret having left my previous job sometimes. I completely understand what life feels like at this point.
That probably is depression. You should really seek out medical help first. Also, talk to your wife about your feelings.