It's time to get on that goal of being able to do pull-ups. If you have access to a TRX or gymnastics rings, this is the exercise CrossFit coaches and athletes such as Brooke Ence (who had a role in the movie Wonder Woman) recommend to build upper-body strength.
No TRX or rings? Use a low bar, like a barbell in a rack that you'd find at a gym. Or here's a video showing how you can do this move using a sturdy table at home.