The easiest way is to run away, change address etc...Sometimes you get tired of running, though.
Face up to it - it's hard but if I managed...
Get good advice, the CAB are great if you're prepared to queue for a bit, agree a payment plan you can afford (they'll accept that) and you'll be in the privileged situation of truly understanding what a 'weight off your mind' really means.
Whatever you do, don't ignore letters - the situation won't just go away.
Good luck.
John H