These symptoms are a classic sign of burn out. One thing I notice in your writing is you’re very tied up in things having meaning and mattering in some specific way. This itself can lead to burnout because if everything must matter you must be emotionally invested in everything. But you can care without it mattering to you. You can do a good job without being totally invested in everything about it. You can love what…
I think what’s universally important is to keep active and engaged in what we’re doing. Some of us have to tell fictions that what we’re doing has meaning, whilst others just know what brings meaning to their life.