The biggest time wasters are all those small distractions that happen in your workplace. By applying these few rules, you will boost your productivity like hell! At the end of the day you will have more time for the things that are truly important to you.
Check email a maximum of twice a day.
Set an exact hour to process your emails, e.g., 12 p.m. and 4 p.m. Avoid checking emails in the morning.
Turn off all notifications about new messages.
… and also from instant messaging apps.
Move all communication from phones to emails.
When people write an email, they are more concrete and concise.
Minimize time spent in meetings.
Refusing and avoiding meetings is an art. Practice it.