Even though you've had a blip what you achieved is still worthy of praise, most importantly because of the amount of effort it has taken. So again, well done! Now you just need to keep in mind the bigger picture. It's one blip - that doesn't mean all your hard work is ruined although I know it can feel like that. It is better to not sh for 4 months and then do it once than be sh'ing all that time!
Hope you're feeling ok.