Brilliant. This might be the way I'll do it.
Solo tech fun:
- Set a long parental control password, you won't remember.
- Write it into some file.
- Put that file into an encrypted container, with a short to medium generated random password you won't be shown .
To access the phone you have to brute-force the container password.
1. set up parental-control restrictions that lock you out of these apps;
2. hand your phone to someone you trust, and tell them to set the unlock password for the parental-control restrictions (so that only they will know it);
3. ask that said person also does you the service of typing the password to disable the restrictions when requested—but only with 24 hours' notice. (I.e. you ask, and then 24 hours later they'll do it.)
That way, you'll never be tempted to unlock the restrictions for trivial things; but you can still e.g. reset the phone if you want to sell it. (You just need to wait 24 hours first.)