Can i be sectioned against my will?

You need to get a DNR (do not resuscitate) signed and notorized - you may need a witness and/a lawyer. You can get one on line and fill it out - I think . Pin it to your shirt or hang it around your neck so that it is visible when they find you. BTW - don't do anything stupid. Maybe you should spend all your money before you die and find the sun, relax on the beach. Maybe you will change your mind.