I would suggest writing a list of things you would like to change in the future. Move out, find a new job etc... Remind yourself that things can change and you won't be in the same position in a few years time.

Having a job is good as what ever it is looks good on your resume and there are always possiblilities to move sideways or up. Write a list of the positives about yourself, good time keeping, friendly, helpful etc.. it all helps.

You could also think about moving out, the money from Walmart could pay for rent on your own place and then you could look for a better job, training in a career you really want.

Just ideas...