Hi OP, I am writing mine at the moment. If you like, send me the jobs you've done, industry you are in etc. and I will have a go at writing your "selling yourself" section. (no need to send any personal info!) I think writing someone else's will inspire me to do mine!
Hobbies not so important unless it's voluntary work. Start with a list of jobs and dates in reverse chronological order with a few bullet points about what you did. Keep it to 2 pages. Try and put achievements. So rather than Filing, put Streamlined Filing system.
Also, if you have recent and substantial volunteering experience but a big gap in paid employment, I would suggest including your volunteering in your "work" section (making it very clear that the work was voluntary) rather than hobbies, especially if you are using someone from your volunteering organisation as a reference.