When you started first started working after being out of work for a long time were you able to manage? Were you okay?

I have been a stay at home mother for a long time and it's time to find a job there's too many jobs to choose from there's like millions of jobs online it's like how do I decide what I'm good at how do I decide what I can do how do I know that job is a good fit for me how do I know I'm ready to go back to work

I've had these questions running through my mind I've been chewing on my nails nervous and afraid can I work can I do a great job can I manage work and the kids will I be overwhelmed tired. I don't know I feel like if I do an interview and get the job what if I don't like the job and want to quit I feel bad they spent money training me for me to leave I just feel a bit stressed what would you do

Any advice and words of encouragement