Another great piece! I like it!

1. comparing myself with five years ago, I am now a changed person.

How about "comparing myself with five years ago to now, I am a changed person."  

2. but feel grateful with (for) what I do have.

3. on a fast track in getting... - on a fast track to getting...

4. I no longer mouthing along - I no longer mouth along

5. I have a new home and working - I have a new home and am working

6. 覺得 evolving 用得不太合適， 用 expanding 較好