I was confidently working my way into the hearts of several purchasers at different DIY-retailers*. Things were looking bright when suddenly, half of them changed workplace. Especially the ones I had the best relations with.
(Further on my best customer also got infected.)
This was extremely bad since their successors needed at least six months to familiarize themselves with their new tasks and re-build the relations with their VIP suppliers. In some cases there were no successor for quite some time and everything faded out in oblivion. This was worse than just going back to square zero.
In hindsight I should have switched focus and started selling to a wider range of smaller stores. But I was blinded by my first successful sale and the possibilities of making big business with other large retailers. This lead me further down the path of rampant stupidity and other problems.
* DIY= Do It Yourself shops.