Cache is king. Initially, I wasn't sure if my lack of IT skills would be an issue but thanks to good old YouTube and Reddit I had worked out which hardware should serve me well!
Physical and mental health - do what is good for you, quit what isn't and why BT was right when they said 'It's good to talk'.
Book Review & Summary: 'Quit Like a Millionaire' by Kristy Shen and Bryce Leung. Written by two prominent members of the FIRE (Financial Independence Retire Early) movement the book provides a guide on how to retire at a young age.