Thank you for the replies everyone

I've sorted a few things out over the past few hours

- I'm going to do my A Levels at home through an open college course so I'm more comfortable and won't end up dropping out again

- I'm going to be taking the dog on daily walks

- I'm going to stop eating so much junk / comfort eating like BlueIris said

- I'll probably end up getting a job too but my mum said I can take things one step at a time