Many motivational speakers have mentioned the three to four hour biological limit of creative work that can be accomplished in a day.

Great polymaths and thinkers highlight this short amount of working hours when the creative juices flow.

Manual labour, which is mos...

... to read and respond to email. Don’t leave your email program open all day long. Alerts from incoming messages can interrupt your work flow. Instead, schedule specific blocks of time throughout the day for checking your email. 

You might even try marking your calendar and s...

• Not everyone can commit full days of deep focus work, or even manage the whole day.
• We can refer to our body clocks, energy levels and working style to create a day calendar splitting blocks of hours in a way that we have half a day, or about three to four hours of...