To all those who've recovered from anxiety and/or depression?

Have you ever slipped, after having fully recovered, pretty badly? I wish I could still think that I was completely over my anxiety and depression. After a year's hard work, I re-learned how to live in the moment, be myself, feel incredibly interested in my interests, I had developed a real burning desire to help others and enjoyed life's little moments. I really enjoyed people, down to their littlest of actions. I felt unconditional love towards them. I was also incredibly confident, self ured and motivated. I had so much clarity you wouldn't believe it. I saw things for what they really were. Now, I feel like I'm back to where I was before all of that good stuff. I'm letting the negative thoughts run my life again, and it's so hard to let go of them the second time around because nothing I learn feels new. Has anyone ever slipped from their "recovered state"? If so, how long did it take you to regain what you worked so hard to earn?