Is a lifting procedure the right answer?

My facial sagging has gotten worse lately and doesn't look very good, so people around me are suggesting I get a lifting procedure.

I understand that there are various types of lifting procedures. What are the differences between treatments like Ulthera and Thermage?

Also, can I resume my daily life and go to work immediately after the procedure?

I would also like to know how long the lifting effect lasts and how many sessions are required.