k it's day 3?
This is good.
First thing you gotta do is: Find a hobby. That's it, all you gotta do is find a hobby, it'll take your mind off the weed. If you think about weed all the time then it's gonna feel alot worse than it actually is. A simple hobby cures this.
As for insomnia: If you can't sleep take a therapeutic dose of Diphenhydramine if it's chronic insomnia. Only take it one or two days, rapid tolerance builds quickly and it's pretty useless to swap one dependency for another. After day 5 or 6, you'll be pretty much settled back into your old life. It just takes an adjustment period, that's all.
I been smoking weed on and off for 5 years and trust me, it seems hard at first but you just have to keep yourself busy.
And yeah, the high sucks anyway. I don't understand why people hold it in such high regard when it basically makes you retarded & lazy.