To dream that you use the doorknob or door handle means that you are entering the new phase of your life. You are ready to go forward and get what you wish for. If you werent able to open the door, because the door knob was broken or it was hard to bend it, then such dream shows that you are afraid to take risks or the circumstances of your life doesnt let you move on, therefore you are unable to control it by using the handle. The dream suggests to pull yourself together and make sure you use your head to solve the problems.
Read more about dreaming of Doorknob/Door handle in other dream meanings interpretations.