Need some advice for how to move to the next step.

Been working gone this for 10+ years. No super-o yet, but I feel the pleasure. I know what I'm looking for. I know how it feels different from penile stimulation. But I feel my progress has stalled and I can't get over the hump.

I pop it in, take a puff of cannabis, relax as much as I can. Breathe deep. Every now and then I get this amazing wave of energy going over me. You know how if you dipped the corner of a napkin in warm water you see the water being "sucked" up into the napkin and spreading out? That's what it feels like, spreading out quickly across my body except with energy or pleasure or something. I'm not sure if this is a P-wave or a low level super-o but I haven't had one last for more than 10 seconds. And I've never managed to have two in one session. I can't find it again no matter how much I relax.

So my question is, how do I proceed? Any thoughts and tips for moving forward?