There is a way you can «bypass» this failure by using forced reps, drop sets or rest - pause sets. (fitnessandpower.com)
This technique is good not only for those who need help right off the bat but for doing forced reps when you CAN do full reps on your own. (fitstep.com)
We highly recommend you include some intensity - boosting techniques into your routine, such as forced reps, drop sets and negatives. (fitnessandpower.com)