<human>: Hi everyone,
I have been working hard toward weight loss--eating better, managing calories, and working out an hour on most days. I have mild OCD, and so it has been easy to roll myself into a routine and cling to it compulsively.

However, next week, I am going to be traveling back to my home city, and staying for a month. 

My problems are first, I deal with change very poorly. Messing up my patterns upsets me and paralyzes me. Second, on travel days I will be a passenger, sitting on my ass, for a whole day, surrounded by people eating bad snacks, and going to crappy restaurants. Then  I will be staying in a situation where I would be ridiculously self conscious about working out. I can probably walk, most days, but I don't think I could follow The Routine. 

Any suggestions on any part of this issue would be so helpful.

Can you condense the text into a few key points?
<bot>: How can I best maintain my fitness while traveling in lengthy car trips, and being out of place, where I would be discombobulated and self conscious?