Let's say I am spending 250 USD to mine a coin of worth 330 USD, selling it immediately doesn't give me a big profit. If I am selling the same coin for 500 USD then thats a good strategy.
(amount spent on mining per coin in FIAT) : (Value of the coin)
when you get a good ratio convert the coin to FIAT.
This comment was so right at the time. I hope OP took that as a good advice. BTC is $580 now so it was definitely not the right time to sell when it was below $300.