Stay strong, the darkest night will always be followed by the brightest dawn. Fulfilling personal requests from users (while admirable) is not something you must accomplish, as they'd otherwise need to commission it. If you give nothing, be prepared to receive nothing. Either way, art slumps is something that I too experience from time to time, but yours seems to be of a higher caliber, so take whatever time you need. We'll look forward the time you may once again grace this thread with your presence.
Could have sworn I've posted in this thread before, but the Suicune and the Bellossom from page 2 are among my favorite pieces in this thread.