You are 'to be congratulated' [=you should be congratulated; you deserve praise] on/for your excellent work.
She 'congratulated' herself for getting the best grade in her class.
I'd like to 'congratulate' you on/for your success.
(..) Next it'll be brandies in the smoking room. Join me in a brandy, gentlemen ? Now they retreat into a cloud of smoke... ..and congratulate each other on being masters of the universe. Ladies, thank you for your company. - May l escort you to the cabin ? - No, l'll stay here. Here you go, Molly. (..)1997 Titanic