Lost...

Recently I've realized I've lost my true self... and I'm struggling to find myself again. I use to always dress nice and actually do my makeup and hair and for a while now I just haven't... I'm honestly not sure how to even start again! Also Im feeling like my bf doesn't even find me attractive anymore cuz of it, what leads me to that is he just loves to add and like random girls pictures that are total opposites of me right now... also doesn't help when my bfs friend who lives with us now seems to always tell me I'm incapable of doing something because I'm a 23 year old girl who's 5'1 and only weigh about 90lbs... but it's really making me feel down... I'm really just looking for support and any tips to get back on track again!