The hiking sounds like fun, osuche!
Two weeks in and things are still going (surprisingly) well for me. I walked an hour on Sunday and then began Week Three of the Walking Plan yesterday (Mon). I was dreading it, truth be told, as I had to increase the 'brisk' part of the walk by another five minutes

I covered the display and listened to music, deciding I should listen to at least six songs before looking at the display. When I finally looked, I found I had walked 2 minutes too long and should have already started my cool-down walking at a much slower pace. That was a real boost as I'd told myself I still had a few minutes left before I start cooling down. Let's hope Tuesday's walk goes as easily.
After that I did 300 sit-ups - 6 sets of 50, and will continue with that everyday this week, along with the walking.
I weighed myself and I've lost 4.5lbs this week

making a total of 11lbs

so I'm overjoyed! I expect to settle to 1 or 2lbs each week now, although I'm pre-menstrual so next week there's a chance I could lose much less
I have taken new pictures of myself, front, back and to the sides and will continue to do this after each 10lbs lost. I have measured myself quickly and know I've lost several inches but will officially measure after four or five weeks.
Food-wise, I am not doing anything special, not following a plan or counting calories. I have cut out things I don't need, such as the bags of candy, bars of chocolate, alcohol etc, all of which used to disappear at a frightening rate. I am eating smaller portions, too, but never going hungry.
Good Luck to all for Week Three 