Tl;dr: Defended my PhD two weeks ago. However, right from the time of the defense and up until the present moment, I am experiencing a huge lack of motivation and sense of purpose to do anything related to research or search for future positions. How to address this?
Other details****: I had applied for other positions before my defense and was not successful in securing a suitable position. I have an offer from my PhD advisor about a postdoc position which I am expected to start early next year.
Leaving every other concern aside, I am very appalled by my lack of motivation and the constant feeling of lethargy to start with the pending research work and/or resume with the dedicated job search.
I have no idea how to address this feeling. I have taken two hiking trips during the last two weekends. However it feels empty and unproductive inside. I have so much to do before I start with a postdoc position. But all am I doing is wasting time.