If you just say "now" or "right now", the sentence is ambiguous. It CAN have the meaning that you want, but I would be more likely to interpret "now" as modifying "find" instead of "your life." "You need to find what's good and true and beautiful in your life. Don't wait until tomorrow before you try to find those things--find them now!" By inserting "as it is", you remove the ambiguity, so that the reader knows that the sentence means "Don't think of the good things you used to have in the past, and don't think about the good things that you might get in the future. Think about the good things that you have right now." EDIT: looks like I was ninja'd by Greg :) [explanation of edit for ESL learners: if you are ninja'd, someone else posts a similar answer while you are still typing your own reply]

No, '... in your life now' is not the same as '... as your life is now'. 'Now' is talking about 2 separate things. In the first the 'now' refers to making the decision on what is good and true NOW. 'Now' is qualifying the decision. In the 2nd the 'now' refers to his life NOW, what he is doing NOW, what he is experiencing NOW. 'Now' is qualifying his life.