If you want to get far away from software, I'd recommend mathematics (as code is built on logic, the same thing math is), law (the first barrier to entering law

If you want to get far away from software, I'd recommend mathematics (as code is built on logic, the same thing math is), law (the first barrier to entering law school is the LSAT, which is basically a logical reasoning test, which says a fair bit about priorities), or philosophy (which requires many of the same skills, e.g., logical reasoning, precision, et cetera), none of which have been recommended yet (I'm especially surprised by 'mathematician' - it's pretty similar.) If I had to rank, mathematician would be easiest to switch into, followed by philosopher, then lawyer. Good luck!