Challenging one's self is one of the hardest thing to do. I'm really impressed that you have the determination to do such ardous task. But then again, you are obviously enjoying the challenge since you persist this long. Good luck with your 100 days. I hope you reach your goal.
Thanks riovanes, I'm in a privileged situation I can actually do this and it are all things that improve how I feel day to day so it's not that hard.