85 and 6', your not over weight, maybe under developed with muscle but you can fix that mate.
Motivation is hard sometimes, but my advice to you is instead of saying you want to be great, or you want to be successful, just say i want to take LITTLE steps each day that lead me to something or someplace better.
This is what I do mate, little steps in the right direction, little steps are attainable and you can then feel a sense of achievement once they are done. Not all of us can look the big picture in the eye and grab that fucker, some of us just know that mediocrity is not what we want, but get overwhelmed with the big picture.
I'll give you an example, I have lost over 25kg of fat now, but that was never my goal, my goal was to loose SOMETHING each week, so little or lots it did not matter, this is still one of my goals mate, but now I have the motivation to add a few more small goals as well. One is to get a LITTLE stronger each week or so, I am doing this with some consistency these days.
Never compare yourself to others either, jesus I'm 31yrs old and starting shit all over again, but my brother in-law is 24 and earns 163 thousand a year. I don't even try to compete with this as its not where I am at this time in my life, so my successes come from other accomplishments like the ones above.
Never give up mate, and never stop trying that's the secret.
Remember, it's not about how many times you fail, it's about how you learn from the failures and move on. Without failure there is never any improvement, you may feel down and out now, but there is always something around the corner mate, chin up.
Graeme