When you get paid, put say 10% straight away into a Notice Deposit account. These offer a higher rate of interest and the beauty of them - for you - is that you have to give notice (a month, three months, six months, whatever) to make a withdrawal. Some will allow an instant withdrawal but you will lose any interest you have earned.
After a number of weeks/months doing this you willl not notice any more.
Then, just a suggestion, give the relevant notice to make a withdrawal in November (for Christmas) and June (for a holiday)!
'Best Buy' tables for notice savings accounts appear in all the broadsheets at the weekend, online (thisismoney.com; motleyfool.com, to name but two) and you can probably even trust the information in the tables in the Daily Mail.