If you're working with a spreadsheet or a thread of correspondence or a set of data, I'm not sure you're doing your best work if you're doing it on an iPhone.
Excellence is a choice, and you must make that choice over and over again until "doing your best" is all you know.
We become what we do.
Advancement only come with habitually doing more than you are asked
To be successful you have to enjoy doing your best while at the same time contributing to something beyond yourself.
You'll never prove you're too good for a job by not doing your best.
What you want to do, and what you can do, is limited only by what you can dream.
I don't think you can ever do your best. Doing your best is a process of trying to do your best.
Grace is always sufficient, provided we are ready to cooperate with it.
Expect the best of yourself, and then do what is necessary to make it a reality.