One tradition treats belief the way a carpenter treats a chisel: pick it up, use it, put it down.
Why this is hard
The position is roughly this: beliefs are less true or false than useful or useless for a job. So you choose one deliberately, commit to it fully while you're in it, and then set it down.
1 of 3
Choose the belief that fits the work.
Because an inherited belief was chosen for someone else's situation.
You notice a belief you never picked, and ask whether it suits what you're doing.
2 of 3
While you hold it, hold it completely.
Because a half-held belief does nothing.
You act as if, fully, for a stretch — and you know you are.
3 of 3
Then put it down.
Because a belief you can't set aside isn't a tool; it has you.
You find you can't put one down, and that's the signal.
The practice
Notice one belief you're running on today. Don't argue with it. Just ask whether you picked it.
Bashar says the tool has no power and you are the permission slip. Chaos magic engineers the slip on purpose.
Austin Osman Spare (1913); Peter Carroll's Liber Null (1978).