I see people around still sending e-mails to themselves in CC or even TO fields that makes me smile :-)
That's because they need to track sent e-mails in a inbox, because by default it goes in Sent Items folder and to see it you need to switch view.
Nowadays, you have Search Folders that can easily help you to track your conversations - recieved and sent. I use it since I started use Outlook at work here in Cisco, since 2007.
Create Custom Search Folders
How to Use the Query Builder for View Filters and Advanced Searches
Learn to narrow your search criteria for better searches in Outlook