To be committed to doing something Example: I am committed to writing a book. You can also say: To commit oneself to doing something, however usually it is in the form 'have committed oneself' or 'will commit oneself.' Examples: He has committed himself to eating this entire pizza. We will commit ourselves to leaving before noon.

I think either would be fine.

To be committed to do something is the correct way. Hope this can help you.

1)