People who work full time and go to school CAN and DO give it their all.
Some of us have no choice as to working, we are the sole means of support for ourselves (and very often for families). I know someone in my class who is married, works full time and has 5 small children at home. She's a very good student too!
I work full time days (every day) and attend an accelerated evening/weekend ADN program. I'm an older student, and I've done a lot throughout my life, so I have no worries about what I'm capable of. Just keep in mind that we're all very different, so try not to take other people's experiences too much to heart when thinking about how YOU will do in your nursing program.
It takes a good grasp of time management to make things work smoothly, but they certainly can and do for many of us who work full or near-full time. I love learning, and I love school... I hope your experience in that regard is just as rewarding as mine has been!