You may be describing something called ‘Workload paralysis’ which, in short, makes tasks daunting because they seem so hard to start. Usually it ‘leads to’ procrastination, doing tasks instead that are known and easier.

Doesn’t help that modern society tries to make you feel bad for having this parallesis, making it cause this whirlpool of self doubt.

Sadly there is AFAIK only one medicine: start. No matte rhow slowly, no matter how insignificant or pointless it may seem, start. As soon as you spend time doing anything, you will get better at doing it. This counts for all tasks.