Depends. Is there a reason besides trying to avoid religious terminology in calling the post celebrant and not pastor? I.e., would you be expected to be available to help people with non-public occasions or just their public celebrations of significant milestones in their lives?
It's not the same role. It's to act as a celebrant in naming ceremonies, weddings (Humanism in Scotland is granted a similar status to a religion when it comes to conducting weddings) and funerals in accordance with humanist principles of people being able to give 'meaning and shape to their own lives.' In terms of help outside of that, well you turn to your friends, family and professionals. If anyone wanted to talk to me about such matters I could help them in my capacity as simply being another person.