21
Saved enough
Tip: mama always told me that always put away half of what you've earnt, so if I earnt 1000 save 500, if I earnt 500 save 250. And put the money into an account you can't access or transfer from.
It's been working for me for the past 5 years but I'm lucky that with Asian parents I don't pay board or for anything extra just for myself and my necessities. Plus you'll start to spend less too if in your account you only have 200£ left and you have 3 weeks until payday.