Hi NL79! Welcome to the forum. This is a safe place to post and there are a number of recovering potheads here, myself inlcuded.
That is great you decided to quit. Yeah, you may be irritable and have a hard time sleeping for a while. I did, but now I am happier than I have been in a very long time. I would suggest changing your routine in the evenings. I started exercising, going out for coffee, reading more, taking karate classes, and going to NA meetings. Not all at once but I knew staying home alone every night wasn't good for me.