You clearly have the drive to be a good nurse and it sounds like a good work ethic. From these responses, it looks like maybe you need to "work smart" instead of "work hard" going forward.
One of the hardest things for me to do was learn NOT do everything for patients. It's not that I feel I'm above a toileting a patient or doing a lift transfer. It's that unlicensed staff CAN do those things but they CAN'T do the other things that require an RN (check results, call doctors, give meds, etc.). If I have time, I actually love to do patient care, but now I try to wait until after my first med pass is done and the pressure to be "on time" lets up. I need to know I have the time available before I start a time-intensive task that can be delegated.
It's easy to get sucked into a patient's room, and it's happened to me many times; let's face it - no one wants to say no to a patient who asks to go to the bathroom. What I started to do is to call my aide on the phone or just push the call light which rings through to the aide. I let him/her know that this patient needs to use the bathroom. Then even if I get the patient up, I know someone will be there to relieve me, wait with the patient, and get him/her back to bed safely.
Doing all of the lift transfers, while a good way to practice a skill, is probably not something you have time for. You are the RN, and you need to delegate. It's hard. I know my CNAs are better at lift transfers than I am. They're also faster at EKGs because they do them all the time. If I need something STAT and the aide is not available, I CAN do those things, but it's not a priority for me to practice them over and over when I have things to do that the CNAs can't do.
Now you are the RN, not a student. Yes, you are learning things, but your primary goal is not to learn. Your primary goal is to see the patients' needs are being met. Doing all the straight caths on the floor just to get the practice is a student nurse mindset. As an RN, if you're off doing all the straight caths, that means you're probably not doing other things that your patients need you to be doing. The longer you're there, the more straight caths and lift transfers you'll do; you don't have to go looking for those opportunities - they'll come to you.