How to find my home in minecraft without a compass. Inventory full don't want t kill myself?

I think I'm on a different island. Playing in survival peaceful mode.

Best bet is to build a scaffold up then go in the direction that seems most familiar. (You could also f2 and try to figure out the coordinates to home and go in that direction)

Get a minimap mod? Try f3 to check what coordinates your at? Do a big dirt pillar and set render distance to 16 chunks?