I just found a list of easy-to-use time management tips on Clicktime. Two tips that I really find to be pratical are:
1. Focus on Tasks Linked to Revenue
This is a no-brainer.
2. Automate As Much As Possible
If most of you work is done using tech tools, it is very useful to automate stuff. There are tools such as IFTT, Zapier, automate.io and many others that you can easily use to work smart.