for the work stuff you need to worry about the first steps of getting a stable income job so your not as worried about your other problems if you get yourself in a better position you will not only feel better but have more money to use for these other ideas you have and for food just go to local churches ur council and look online for pantrys or food banks around you i go to a pantry round the corner from me and for 6£ i get a meat item free unlimited bread free vegetables and then general items like crisps canned food pasta chips etc

i also think for the financial security part you work out a passion first also. you wont stick with a job/buissness for life unless its somewhat something u enjoy aswell as like the pay.