Never done a budget or stuck to one
why have you never done a budget and if you haven't ever done a budget how could you have stuck to a budget you didn't have?
The simplest way I find to budget is to pay yourself on payday.
Have one account where your wages, income, child benefit comes into
and open a monzo or chase account (chase account pays 3.45% interest) and Chase allow you to open up several pocket accounts and give them names
so from the wages/income CB account set up several standing orders to the different budget/pocket account all to go out on the same day as your biggest income is deposited
for example you are paid on the first of the month £1000
so you set up a standing order to
council tax account £150
utilities account for gas and electric £150
water account £50
petrol account £55
xmas & birthday present account £25
house insurance account £25
MOT and car service account £25
Internet and phone £35
Grocery shopping £400
total £915
that leaves you £85
but you can spend that £85 on what you want over the month but once it is gone - its gone
when you pay for groceries you move the money into your current account and obviously divid by 4.5 so have £88 a week to spend on grocery shopping
then when you get the child benefit or any other income hitting your account through the month - that is yours to save or spend