From the drop-down menu of your display name, select My Activity Stream. You will be redirected to your own activity stream page.
Here, you can see your activities (inside and outside a space) and activities where you were mentioned, liked or left comments.
Your activity stream page (
../activities/[username]) is visible to anyone
even if they are not your connections. They can comment or like on your activity stream page. However,
only your connections can see the Activity Composer that enables them to post on your stream.