What will be the best way to reenter into the workforce after a career break?
There's no "best" way to do anything. Your first step might be dropping a perfectionistic self-sabotaging worldview. Whatever you do will be good enough, and it's not the end of the world if you make a mistake.
How long have you been out of work? There are returnship programs to get back into the workforce.
Four years
Networking helps. Also temporary work can be a good way to ease back in.