No one is invisible. Each person has something of which to be proud. The fact that you are a living human being is something of which to be proud. You have a lot to offer and that is always something of which to be proud. Any one who thinks otherwise is a fool.
And, yes, Gwaredd, is the Welsh spelling of Gareth. I was born in Trethomas but moved the the States as a lad. I spoke Welsh fluently at home but have lost much of it over the years. However, I am desperately trying to relearn it since it is a beautiful language and the Welsh people are trying to keep it alive.