I've found cannabis to be extremely helpful. It adds a tinge of paranoia - so if you're paranoid about not reaching your potential, it can kick you into gear.
nah I found cannabis to be counterproductive in my case. It was never only a "tinge" of paranoia. It always comes up in bouts. And it was a slippery slope. I'd often keep getting distracted with other things like YouTube, games and social media to keep the anxiety and paranoia away.
Took a while to kick it out.