Dear friends, clients, colleagues and partners
I am leaving [name of company] on [date] to [what you're doing on your career break].
I'll be away until [month/year]. When I return, I will look for another [whatever you do] job.
If you'd like me to keep you posted about [my travels/my volunteer job], visit my website at [name of website]. My personal email address is [name of email address].
I look forward to seeing you again when I come back.
Kind regards [or however you usually sign off]
[your name]