Do I always try to accomplish everything I do diligently? No I don't. I often start of with great intentions but easily and quickly fall by the wayside or let things slide. This can so often happen in matters of faith, I do fully intend to read and pray each day but ......., I do try to live my live in a manner that is pleasing to God but ...., I do intend to prepare for Sunday School, SU group fully and in advance but ....... There is often more buts in my life than diligence.
Thankfully God is patient and forgiving. Hebrews 6 has these words
"God is not unjust; he will not forget your work and the love you have shown him as you have helped his people and continue to help them. We want each of you to show this same diligence to the very end, so that what you hope for may be fully realized. We do not want you to become lazy, but to imitate those who through faith and patience inherit what has been promised."