Hi All, Hope all is well. It's been a while since my last visit to PF. I'll cut to the chase: I'm now in my 5th year of grad school, and I basically feel like crap. On the surface, things seem fine. I have two papers published, another accepted for publication, and a fourth in the revision stages. I am first author on two of them. All are in decent, respectable journals. Deep down though, my motivation and excitement has disappeared and my productivity and general contentment with my work has crashed. And I mean CRASHED. I am having trouble getting myself to do my work, let alone getting excited about my work. I can't seem to get myself interested in any papers I'm reading (or writing), and in general, I just do not feel interested in science anymore. Honestly sometimes I don't know remember why I even enjoyed physics in the first place. I'm really starting to worry. I'm afraid I'm going to end up with no hope for any type of career either doing or teaching science simply because I no longer have any drive to produce results. I feel intellectually and emotionally exhausted with the whole endeavor. Anyone been in this type of state. Any motivational advice?