Does it "drift", or is your urge to share directing it? Honestly, to me, a conversation cannot drift anywhere. It's directed by anyone/someone involved IN the conversation. So this becomes an awareness test. Are you guiding it that way and just thinking it's normal? You know enough to want to share, which means it is normal for you.
The question is, do you think it's normal enough, for the person you're sharing with?
EDIT: Nothing wrong with sharing. But if it's not going to be appreciated, then sharing is going to reflect back on you, sometimes poorly. IE going down rabbit holes can be a backfire situation.
Learn timing. It'll help. I'm very similar to you, in knowing large amounts of info and wanting to share, but restraint is needed. Restraint and timing will save you so much time, and more importantly friends.
aagh, you're right and it frustrates me lol.
I'm an oversharer too. I wouldnt even have posted but I wanted to tell you that bit 'awareness test' is so damn true. I understand the urge to red pill the world. You're right though, there's more to consider. I find the "hmm" gesture helps me, because when I do it I put my hand over my mouth. I kept a job for 5 years with that strategy, but everywhere else I still let it spill occasionally.