Agree with Outwiththeoutcrowd.
I can relate deeply to what you have said, in fact it's funny how others view us through their own lenses of pain/drama/expectations and sometimes their interpretations are humorous in the mix. Once a friend told me she thought I was 'competitive' and I was literally taken aback, I have never thought of myself that way before. SO, if she had interpreted my actions or behaviour over the years as that - what was I doing that gave that impression?
I think this is very subjective and not easily expressed because others do see us based upon their own stuff. It's not meant as a negative connotation, just an observation.
On and off throughout my life I have suffered deep depressions, whilst onlookers would have had NO idea. Also, when I was having panic attacks and depression/anxiety people couldn't believe I had that either, given that I had a. the perfect (in their eyes) relationship, b. a good job, c. you name it, and so on. What looks good to others doesn't always come with the whole feeling thing that depression seems to me to be. It's almost like an overwhelmingness and powerless inability to either accept or change our lives, or to speak up or to ask for help or to do many other things.
I'm sure you didn't come here for my answer, but this is what I now know to be true in my case: my depressions have been very much me taking on board other people's stuff and not being able to deal with my own. CBT can really help. Those who have never felt what depression is like may never recognise or understand it in others.
Go easy on yourself, and don't define yourself by how others view you. If you do that - you will always be a prisoner to another person's concept. Let the real you out to play, and attempt to enjoy yourself along the way. You can do this. Your friends will love and accept you no matter what.
I wish you love on your journey, IB x