Uncertainties

5 days until I go away on my wwoofing adventure. The anxiety has started to kick in big time now. I'm constantly going back and forth with the negative voice in my head as to whether I'm making a big mistake and whether it would be easier/safer to just stay at home and get a job. Everyone I speak to about it has a different reaction; people who know me tell me to go for it because they know it's the type of thing I'm into but other people (including my mother) can't understand why anyone would want to spend their days outdoors in the rain and mud and not even being paid for it. I just want someone to tell me that I'm making the right decision...