It is not really a compliment when someone tells another person that they are a brake block. What is often meant is that the behaviour slows down a process unnecessarily and makes them angry because things are not moving forward. Behind this, an irrational or inappropriate fear is often assumed or interpreted. Sometimes this may be true. But brake pads also have their good points. They can protect you from excessive and inappropriate speed in a situation and from the consequences that would result from not braking in time. I may remember driving down from a pass in a rented car on a winding, narrow road. More and more I felt that the brakes were giving way until they didn't work at all. I could only brake with the gearstick and hope that I could soon pull out somewhere. How I would have wished for a brake pad back then!
I wish you an extraordinary day!