Re: What is the best way to pick an area of expertise?
welcome! If you don't have a very strong idea as to where you want to go into, then chill. Get your BSN and while doing that, see what piques your interest both in lecture and clinicals. In clinicals, pay attention not only to what you do, but look around and see what the RNs are doing. (what I mean is, OB clinical may be incredibly boring if you only get to observe 2 scheduled sections, one vaginal, and check 5 fundal heights and dc a foley or 2--but ask any nurse who works in OB, it's rarely boring. ICU might blow if all you get to do is look through charts and help reposition a Pt once or twice, but talk to the RNs and you'll hear plenty of stories)
Biggest suggestion--Keep an open mind!
For me, personally, I want to be a midwife, so OB is where my heart and mind were (are). But while taking my BSN, I also became very interested in something I never would have imagined-nursing research.
Plenty of my classmates thought they would hate ______ (fill in with peds, tele, ICU, etc) but they're now happily employed in those areas. The biggest change was my one frined who wanted to do school nursing--she was 100% sure-she likes kids, wanted the predictable schedule amd relitively slow pace and low acuity, etc. She's now a flight nurse who spends lots of time on call and takes care of the sickest of the sick.
One of the greatest things about nursing is there are so many different fields. Tried ICU and hated it? Give peds a try. Sick of LTC and want weekends/holidays off? Go to a clinic. Want to have more flexibilty and autonomy? Try home care. Want to travel and experience new cultures? Do travel nursing or volunteer work. The list is really endless.
Best of Luck!