I have made a pull up bar in the house. It is just a piece of solid metal that is fixed into the wall. I go past it every day. Now and again I will do some pull ups. The most I have ever done is 8. So 100 certainly seems an impossible amount.
I was watching an interview on Youtube about an ex Navy Seal. He started life in a small town in America. He was bullied at school for being overweight and black. The KKK had their headquarters close by. He says that because he did not get any support from the school or his family, he had to push himself. He joined the U.S. Navy Seals. Nowadays he runs crazy distances and does thousands of pullups for charity. His name is David Goggins.
To achieve what you believe to be unachievable, you have to first get out of your comfort zone. You have to feel discomfort. This is what he asks of people he coaches. He asked one of them, an average guy to do a 100 pullups. He eventually did it. So did I. But I had to go through some discomfort. And it took about an hour (or maybe more). But I did it.
Get up Early! If you want to get things done. If you want to want to train. If you want to learn a new skill. You need time. You need dedication. 5,4,3,2,1 get up as soon as the alarm goes off. Don't hit the snooze. Do some exercise or just move your body. My youngest child has a "wake up and shake up session" every morning at her junior school to start the day. Getting up early is a common trait of the most "successful" people in the world.
So What is Stopping you?
I've hit 50 now. My plan is to be fitter than I have ever been. The only thing holding me back is myself. I find the best days now, when I feel great, are the days that I get up early. The days that I exercise. The days that I give myself targets, whether they are business related - finish a report, or family related - make breakfast for the kids.
Learn A New Skill
So, on top of everything else, I am now learning internet marketing. Why do things in halves. Thoroughly enjoying the training.