Good stress release (can add more stress too sometimes )

This is something that I learnt from one of the investors that I follow - it is almost like a mantra. Ultimately, it makes sense (to me).
The idea is that  you may have a shopping list and feel that the stock is expensive at its current valuations. As time goes by and the company outperforms analysts estimates, the share price will continue to rise and your "expensive" has become even more expensive.
Don't be afraid to buy winners, so long as their fundamentals and financials are healthy/positive and the company is on track.
So, I'm eyeing winners like ...

when is a good time for you to buy?