Would It be Better to Make A Change?

I'm a person who always pay too much attention to this topic: Would it be better to make a change? Would it be better to change for a new job? Would it be better to be fatter (I think I'm too thin now)? Would it be better if I look for some native speakers to help me with my English? These kinds of questions are always confuse me.
Not only do I question about these matters, I always do an action (or, "take action"), as I quit from my old job and take medicine which I am told is helpful for putting on weight. I signed up in Italki to look for somebody to help my English as well.
That's me, a girl always sunk in anxiety.

Would It be Better to Make A Change?

I am a person who always pays too much attention to this topic: would it be better to make a change? Would it be better to change my job? Would it be better to be fatter (I think I'm too thin now)? Should I look for some native speakers to help me with my English? These kinds of questions have always confused me, as have questions about other matters. I always begin an action, as I quit from my old job and took medicine which claims to be helpful to put on weight. I signed up on Italki to look for somebody to help my English as well. That's me, a girl always stuck in anxiety.

I made a few corrections for you but am not quite sure of your meaning.  Do you feel you begin actions but have trouble following through?  Be sure to review your writings before you submit them to see if you can find a few errors.  

Way to go!