What am I doing?

Today I got on the treadmill (which made 4 times this wk.), and I was walking for about a minute and then told myself "run just a little." So I cranked up the treadmill fast enough that I either had to run or fall off. I ran for 6 minutes, not all at the same time, but I did 1 mile in 16 minutes (which it usually takes me 18-20 min.). I ran 6 of the 16 minutes !!!! I was getting close to the end of the mile and I thought "after running today, I can just stop at one mile" but when I got done w/ the 1 mile I couldn't stop, so I walked for another mile. I got done w/ my 2 miles in 33 minutes (usually takes me 38-40 minutes). I know it may sound silly to some of you reading this, my times are not good and I am no where near running a marathon, but I am improving and that is what matters to me. Then I walked til I got to 35 minutes b/c a friend told me I could, seems so silly but true. It seems weird what a few little words of encouragement can do. I don't know if we always know what an impact just a few words can make. So I want to say thank you to all of you who have posted comments or made comments when you see me, it has really helped me. Side note, I got a card in the mail yesterday from a new friend and it touched my heart more than words can say, simple act....big impact !!!!!
Sunday Night - one more update, don't know if ppl read this over the past two days or not, but I wanted to add that I ran 1/2 mile straight tonight, took me 6 minutes, but I ran the whole time. I am still walking 35 min., but I am walking over 2 miles. Still have only lost 35 lbs., but I know I just gotta stick w/ it. I lost like 30 lbs. in two and a half months, which I loved but I know it can't keep coming off that fast. I dread getting on the treadmill, but feel so good getting off. I think I might be turning that corner, of not dreading the treadmill soooo much.