Walking Walking Walking so I can RUN

OK so back in 2000 I was probably in the best shape of my life, swimming, tae kwon doe, kickboxing, working out with a trainer, and training for a marathon. I loved the going running part it was so relaxing and I felt great. Then I went back to school to finish my BA since I was capped out at my salary grade and needed to finish those last 17 units to graduate.
So naturally I stopped doing all those fun things. Then a couple of years I was just too tired and would get winded going up the stairs. I thought wow I really have gained some weight need to work on that...I would try but I was still too tired to do anything. I managed to lose some weight and my doctor congratulated me on my efforts and I was huh? I haven't done anything and I am super tired and winded when I go up and down the stairs. After a few blood tests I learned I was anemic and then a few months later it was severely anemic and told not to exhort myself. So much for getting into a workout routine.
Well now that is behind me and I have signed up for my first 5K in years. I am a little concerned about how long it may take me and can I finish it? I know I can but you know I have that fear of taking too long or passing out silly things I know.
So today I set as my first day to start doing quick walks in preparation to start running eventually. As I laid in bed early this morning I thought. My gosh how can I do this I have so much extra weight I am going to look foolish. I thought about postponing my walk but after an hour of laying in bed and arguing with myself, I pulled the covers off and put on some workout shorts and a tshirt and dusted off my New Balance running shoes. I downloaded an app to my phone to track my walk, distance, time and calories burned.
I set off for a walk for what my dream was a year ago; to be able to run to Qualcomm Stadium from my apartment. by the time I lived there a year. So I did one mile towards the Q and back to my place. It took me 25 minutes and that may seem like a long time for some, it does to me but I am more determined now to make my dream a reality and on July 31 be able to run/walk to the Q and back to my place.