Not at all trying to be scientific. That's one reason I mentioned 5 minutes and google...
For some of the 'proven ways', the only way that might be possible to find and use them could be to find an experienced tester, (or a support group , there used to be many, that discusses their methods of success used and where) ....
that has a track record of actual (not claimed) success (even if on internet search, though it must be still tested to verify , step by step as possible) ,
It took quite some time (years) to find some successful , as they are not permitted to advertise , including some laymen's groups that have been successful since before 1950.
Quite extraordinary results are possible, but since they are so inexpensive, the other ones who control the scene don't like it nor tell about it, nor practice it, and they take quite a lot of legal and social action, including media, against anyone standing for truth and actually succeeding God's Way.