I don't know if it's a major criteria but I find loss of pleasure can be variable, when my depression has been less severe I have been able to distract myself with something absorbing and experience relative enjoyment, that is nearer to pleasure than usual.

Whatever it means, if you can enjoy something at sometime, cultivate and hold on to the memory, rehearsing it and reliving it at different times, every day as much as you can. This will help your quality of life, whatever your difficulty is. You have a great gift.

Good luck and best wishes