Be a hard master to yourself - and be lenient to everybody else.
A dull axe never loves grindstones, but a keen workman does; and he puts his tool on them in order that it may be sharp. And men do not like grinding; but they are dull for the purposes which God designs to work out with them, and therefore He is grinding them.
No man is such a conqueror, as the one that has defeated himself.