Not an epic failure. These things can be corrected. Epic failure is when you choose not to correct.
My H relied on my brain ALL THE TIME too and it was one of my bigger complaints in the M. There was no space for me to live my life because I always felt like I was living his for him.
Somewhere there is a chapter/book/article about new love and enduring love that describes how all those crazy intense feelings you had for your wife in the early days are essentially hormonal, and once you choose to make her your life partner your task is to morph from hormone crazy to nurturing and sustaining a deeper love. That's what's meant by "love is a choice." That's why affairs can be so exhilarating too.
Me42, H40 D12, S8, S7 A revealed: 7/13 Sep 4/14; Agreed to D 1/15