abbey Printmiss is right - it depends what you want.
Try to work out how much you spend on food, council tax, energy costs, house maintenance, your car, clothes, going out, other miscellaneous expenses.
Then see if your £28K will be enough to cover it.It helps if you keep household accounts so ou know what you're spending.
Something to bear in mind is that it actually costs you money to go out to work and you may find after you stop work, that it costs less to run your car, if you use that to go to work, you spend less on clothes and you can spend less on food if you cook more from scratch than when you're working.
Have a look at your savings and see if that money could work harder for you and provide some income too.