The difference between perseverance and obstinacy is, the one comes from a strong will the other comes from a strong won’t. (Henry Ward Beecher, 19th century social reformer)

Perseverance is an admirable quality. We respect people who stay with a tough situation to its conclusion, when it would have been much easier just to give up. On the other hand, we don’t think so highly of people who simply refuse to move on when it’s clear that change is necessary, even inevitable. Don’t confuse your will- and won’t -power.

So, my dear brothers and sisters, be strong and immovable. Always work enthusiastically for the Lord, for you know that nothing you do for the Lord is ever useless. (1 Corinthians 15:58)