perfection can be the enemy of efficiency

Just read a few short & nice articles from SA. (*.*)

Can anyone tell me of:

My optimum working conditions – in the morning, during the afternoon, or in the evening?

Do i need to have a buzz about me or silence?

Are certain tasks (or people you have to deal with) liable to leave you feeling too frazzled to tackle anything more complex or challenging that day?----quite influential on me

y no improvement? cuz of no cmmitment?? i doubt...