Just because you have been up to your eyebrows into a worthy cause or a certain subject, be gentle around those who are only ankle or knee deep. People have to start somewhere.
To me, living with your head down all the time is just existing, not living.
Think back on your past a bit and you can easily pinpoint a few times when, had you opened your mouth or stepped up to the plate a little sooner or stood up for that person… well… thing may have turned out differently. You wouldn’t have that nagging regret in the back of your mind.