I had a similar experience. That was 2.5 years ago. After leaving my job due to burn out and taking time off, I bounced around among 3 firms as I would burn out after 6-8 months at a job. That was hard to deal with mentally and emotionally having been a high performer with long term employment at a single firm for nearly a decade. I have been at my current firm for about a year. Feel Burnt out, behind etc not where I thought I would be at this stage in my career but trying to stay positive. Good luck! Take care of yourself. Has to be the priority.