you get used to it, the first few times it may be diffucult but it gets better. maybe you could consider volunteering or getting a part time job as a cna to get a better feel for it.
as far as the 2 or 4 yr program look at each program checkit out well. and decide which is best for you. but my advice is to go for the 4 yr program, if you can. being you are young it is best to get the most education you can at a young age if you can.
I teach at both ADN and BSN programs and truely believe that it is best to get as much education as you can when you can.
as stated above check the actual length of programs in my area we have 3 ADN programs all take at least 3 yrs to complete. and 2 BSNprograms one takes 4 yrs other is accelerated program with long classes and long days but you can get your BSN in 2 1/2 yrs. needless to say that is the program I went to. the little difference in time to complete the program Ithink in most cases it is best to get the BSN if able to.
just make sure it is a good program,. and note the key words in my post do it if you are able to.
one more point only go into nursing if it is really what you want don't do it for the money or you will be unhappy.
good luck in what ever you choose to do.