Based on a popular demand, I went into a Subway requesting to build my own sandwich. During the experience, I found two things interesting:
1. I had to clarify repeatedly that what I really wanted was to build my own sandwich, with my own hands. I thought "building my own sandwich" would entail that, but it wasn't enough.
2. Apparently, the idea was too crazy that the girl said no without knowing the reason, and had to ask for help. It would have been a more lively conversation had she asked 'why'.
Learning: Some times an idea can be too strange that our automatic response is to say no. Before each 'no', I should ask myself and the other person 'why'.