What works for me? Hard to say, as I'm still researching (~5 years of practice now).

The first 2h in a floating tank was good. Sitting 2h in half lotus in a spa whirlpool had a great effect on my backpain. Listening to binaural beats is sometimes helpful, so is walking in the forests.

Also the psychedelic/entheogenic family certainly helped me open up to "the bigger picture". 4-FA had an interesting calming effect on me, but certainly isn't a good tool for meditation, as I fear its destructive effects. But I heard from an ADHS guy that ritalin helps him to focus while meditating. Also listening to experienced practitioners of meditation was helpful (Osho, Jon Kabat-Zinn, some Zen monks etc.)

Actually, I discovered the best talk (imo) on meditation yesterday. It's a 30min time investment, but the best explanation I've heard in 5 years - the interesting segment starts 2:55 and ends around 36:00.

[YOUTUBE][MEDIA=youtube]lU7jEMMMvhI:175[/MEDIA]