I guess it's a little bit of a sad story, but I think it shows a strong mindset. So, I saw a picture that allegedly belonged to the Einstein office which was taken a day after he died. Basically, you see many different books open on the desk and some writings on the board in this picture. It reminds me of two important things. The first one, follow your passion until the end of your life. The second, death will come silently. Live like it's your last day, without regret and doubt.