Could you be more specific in identifying exactly what is holding you back from persuing the moves? I mean, with the pole sit, is it the pain of chinese burn between your thighs? If so, that is common, and kind of unavoidable, but good news is, your skin gets used to it, and one day, you won't even notice it!
If you think it's more about your grip; not being able to pull yourself up by your arms, then try building arm strength in other ways. Pushups, chin ups, tricep dips, even fun sports like tennis, rowing or swimming are great ways to build lean muscle in arms. But again, your body needs time to adapt, and depending on how active and fit you were prior to starting pole, can influence how quickly you learn. People with a gymnastics or fitness background, for example, often speed ahead of others in pole. But it is never too late to get healthy and fit, your body just may take more time if it's not used to being pushed.
If it's about grip, look into getting a pole with a smaller circumfrance. I have a 38mm brass spinny, and it is fantastic for small hands like mine. Otherwise, just experiment with different grip aids available. I like dry hands, and sometimes use hair spray.
WHat I have found makes a huge difference is being inspired. If im in a cranky, tired, bored mood then I'm probably gunna have a disappointing workout. When I've been watching some awesome youtube videos of pole dancing, and I have a few tricks in mind or moves I want to try, and I have some great new music that makes me really wanna dance, THATS when I have a great practice session and make progress.
Practice makes perfect though, so why dont you try to encourage yourself to stick at your session even when you become frustrated. I mean, maybe you are quitting too early and not giving yourself a chance to "click"?
Hope this helps, let me know how you get on.. xo