Insight guidance

During meditation I focus on breath and when mind wanders I bring it gently back to breath. I have been doing this for 6 years. Most of the time there is this continuous noise. It's a mishmash of words, sounds, visuals going on. I do catch the thoughts quite early before too much proliferation most of the time but it's never ending and not long before its off again. Sometimes I notice that I enter a more calm state where the mind doesn't seem to wander as much and it feels nice, kind of relieving. I'm not sure what I should do once I get there? I sort of just watch and note things. Sometimes usually towards the end of the hour(I have a timer), I start to get this really awful feeling like a mixture of restlessness, impatience, boredom, and anticipation. I just want it to end so badly. I am very tempted to open my eyes when I feel this as its so uncomfortable. I'd basically just like a little guidance. Does this all sound right what I'm doing? How do I move into insight practice? I'm unsure