I've reached a point in my job where I feel burnt out. I just feel myself slowing down and not having the energy I had before. I think I'm literally done, stick a fork in me, it's over. I've had conversations with my manager but she's in denial that I'm burnt out (burnt out for me still yields decent results), mostly because I think she's afraid of what to do if that is true. Any suggestions from people who have felt that way? What should I do?