If you truly don't have friends ,then your question is moot ,because you don't know if or what your missing ,in which case theres nothing to change to or for ,if you are saying you had friends and lost touch or commonality and want to reconnect and make new ones but dont know how ,is totaly different thing .

Or do you suffer from low self esteem? consider yourself so flawed that you think if you change something about yourself, you will suddenly be the extrovert "life of the party" popular person, a pack of hanger on's(groupie's) that don't actually represent friends . We will call them "transactional" friends.they use you as a stepping stone until you are of no use and then there onto there next thing .

Can you give a better explanation of where you are coming from ? Personal change to attract potential friends is a recipe for disappointment , the old saying " a leopard can't change there spots" comes to mind ,so attempting to change something about yourself to attract potential friends ,in most cases is temporary short lived interactions . We are composites personality wise of our life experiences , our teachers ,and the community we are raised in .

Has someone told you "I would like you better if you didn't ______ or weren't _______ " thats a person trying to get you to conform to there ideas , and therefore not allowing you to be you, that's a sick situation and reflects badly on that individuals character and ability to maintain a healthy relationship and maintain boundrys in a positive way .

That's off the top of my head ,if you can give a better idea of what you meant , we maybe able to give you better information .