Do celebrate your success

Wanna win war ? Win battles. But, don't forget to celebrate it. Else, the day will come, when you'll say. आम्ही येवढं चांगलं करून काय उपटलो. शेवटी च्यायला असल्याचंच चागला होत.

Experience

Technically, if your logic won't work than its of no use. And if your technical knowledge doesn't understand logics, it's not useful either. That's why sales and support should work together.