From today's Hakhel email - though I believe that Reb Schertz has said this in the past it definitely bears repeating! Such an important lesson about how to conduct ourselves. Personally I feel like the yetzer hara can get in the way of this - like why are you helping someone for nothing etc. but if foremost in our mind is the mitzvah - it's a whole different way to view business.
C. Why is Efron frowned upon as a money-hungry merchant, while Chiram the King of Tzor who was so handsomely paid for the materials he provided to build the First Bais HaMikdash, was nevertheless considered to be so virtuous that he was zoche to miraculously live for as long as the first Bais HaMikdash stood? HaRav Chaim Kanievsky, Shlita answers that like so many other things in life IT IS ALL A MATTER OF INTENT. Chiram really did what he did to build the Bais HaMikdash--the money was nice, very nice--but it was secondary. Efron’s first goal was the money--although he also wanted to show respect to Avraham Avinu as well. Thus, while a person may believe that his thoughts are locked into his mind--and are--at most--limited to his relationship with Hashem who knows all thoughts, this may not be the case at all. The after-effects of a person’s Kavannos and the mark they leave on this world may be demonstrated to all through the results of the very actions that were taken from those ‘private’ thoughts that may not really not so private after all. We are all familiar with the Chofetz Chaim’s advice to the pharmacist--when filling the prescription make it your primary goal to help the sick patient, and also take the full price. You are then Osek BeMitzvah and being paid for it--as opposed to earning a good living and secondarily helping people while you’re at it. We are to live in two worlds --Olam HaZeh and Olam Haba--but they are not equal--and we have to put one ahead of the other. The choice is ours. Every task as mundane as it may seem during the day, has so much potential in it--where will we steer ourselves in its performance--where will we put the LeSheim Yichud?! As we move through our day’s duties, if we could put the Olam Haba--LeSheim Mitzvah, LeSheim Shomayim focus on it--we will do much to move towards previously ordinary and now truly exemplary actions--which accurately reflect upon the beautiful thoughts behind them!