As per JIRA documentation http://www.atlassian.com/software/jira/docs/latest
The following filter will show the issues opned by me (Current User).
repor
You can use the Activity Stream gadget with a filter configured by username and activity type. Note that this requires a case-sensitive username, not the friendly Display Name.
Activity Stream gadget configuration:
Filtered Activity Stream display:
(I posted a variation of this answer elsewhere but have improved my filter since then and the new filter is more salient to this question anyhow.)