You may always return to objects you have recently viewed.
Steps
Worksheets
1. Click WORKSHEETS > Favorites and pick one of the entries.
Collections
1. Click OBJECTS > Collections. Click the Favorites tab and pick one of the entries.
Dashboards
2. Click OBJECTS > Dashboards. Click the Favorites tab and pick one of the entries.
Example
Click WORKSHEETS > Favorites > More
You then have the complete list of your favorite worksheets.