I smoked for 43 years and my first effort to quit using ecigs failed miserably because I was told I should use 4-8mg.

Wish I’d known about ECF then. Second try, year or two later, I used 14-16mg depending on vendor. Couldn’t quite quit. Eventually bumped to 24mg and, with a great struggle, finally quit smoking completely a year and one week ago today. I’m still is a state of disbelief that I did it, so much so that I haven’t posted a one year vaperversay notice, which I should since it was due in part to the great folks here and all their excellent advice and support. Gotta love this place.
24mg was a massive overdose for me but it is what got me off the stinkies for good. It made me lightheaded and dizzy but not nauseous. A month later I dropped back to the 14-16mg and soon after that started DIY. Soon after that, I started dropping the nic content and am now down to 5mg. It was a natural progression, not forced. I find that I need less and less nicotine as time goes by. Nicotine also makes my ears ring a bit, something some other people have mentioned having a problem with. The less nic, the less ringing.
I always had a higher nic juice handy for “those moments” but they seem to be coming fewer and farther between. Within a month I’ll have it down to 3mg or less and plan to stay there vaping alternately 1-3mg and 0mg juice. That just seems to be where I’m headed with my physical comfort level. Heck, there’s several people here that have been happily vaping away at 32 or so mgs for ages and are happy with it. In the end, it’s all about you listening to you and not trying to live up to someone else’s expectations. Good luck and happy vaping!
Oh! Yes, the taste is different with less nicotine in it. Higher nic to me now feels like inhaling pepper spray. Some people apparently like pepper spray. I’m dropping 1mg at a time so I no longer notice it as much but before I was alternating between 16mg and 0mg and it took a little getting used to. Personally I prefer the zero now most of the time but, again, that’s just me.