Best Routine: it s your own routine, mine probably won t fit with yours. Moreover i m practising a technic that is mixing meditation and yoga.
Regarding my experience (more than 12 years ), i ve tried diferent technics (zen, bouddhist, mindfullness, breath, walk...) and all of them works perfectly at its time. It was part of my learning, testing etc...
Each person has its own path/resonance...., so you have to try diferent technics in order to know which one will fit more for you.
Now it s been nearly 3-4 year that i m practising another tehcnic, a mix between yoga and mediation. I ve learnt it by a Yogi called Sadhguru.
If you never pratice, the 1st technic to learn is to focus on the breath :
" you may simply focus on listening to your breathing for 5-10 minutes. To do this, relax your body, sit comfortably, and notice your breath. If you find yourself thinking of other things, simply redirect your attention back to your breath."
this territory is moderated