I'm personally crap at jumping around in MMO's (I find the sideways movement when abutted against something and jumping particularly annoying), but have got all of them up to and including Tatooine as I was on each planet.
I stopped looking since then but will go back once I hit 50.
Even though I struggled with some, I have really enjoyed that they are sometimes difficult and challenging to reach.
just keep trying, you will get them.