Of course you have control over this, by not letting it rule your life! Plenty of people wear glasses and have eye problems, or scars or teeth that aren't straight, so what? When my parents married it was knowing that my dad had a chronic illness. Another family member has a very obvious disability that has stunted their growth, but it hasn't stopped them attending uni, being awarded an MBE and getting married.
A passport photo is a 1" square that spends most of its time in your bag/pocket. It's looked at for mere seconds. Passport Control aren't analysing your face other than to see if it matches your pic, then they move on to the next person; they don't care about your looks.
Travel, do sport, volunteer, go to concerts and exhibitions, do hobbies and meet people. Nothing is stopping you except your mindset.