I can tell you from years of experience cannabis in my case yes has worked wonders. It significantly slows my mind down to were I can actually think rationally and racing thoughts aren't a problem. Its also keeps me in a postive mood as well as makes me a lot more social. However when you run dry that's your problem I just resort back to my oldself and whatever the drug was masking or helping is suddenly 100 times worse cause the coping mechanism isn't available.

It might lead you to seek other highs or other high risk behaviors to fufill the same role as cannabis. My advice is its better to not use as it may become an escape from reality which we should really face the music or a dependance.