Ability for users to discover their own content

It is currently very hard for users to discover the content they have entered themselves. There is "Timeline" and "Activity" (I personally don't know the difference between these) but there is no way of getting a list of "all proposals that I have created", "all meetings that I have participated to", "all projects that I have commented", or anything else like that. I think it would be valuable for the users to easily find the content they have entered in order to help them follow the process more easily.