The following self help and motivational insight has been adopted from Seth Godin’s book The Purple Cow

“If a product’s future is unlikely to be remarkable – if you can’t imagine a future in which people are once again fascinated by your product – it’s time to realize that the game has changed. Instead of investing in a dying product, take profits and reinvest them in building something new.”

This piece of wisdom can go a long way in helping us decide when to stop investing in a product.