“You have to motivate yourself with challenges. That's how you know you're still alive." Jerry Seinfeld By E-MotivasyonQuotes About Life, Words About People, Motivational Quotes0 comments ▶Dr. Tayfun Topaloğlu Youtube Instagram: @drtayfuntopaloglu “You have to motivate yourself with challenges. That's how you know you're still alive." Jerry Seinfeld