All good things (virtues) are perpetually lacking in this world, all except one. We can serve. If someone possesses more spiritual qualities we can serve that person by taking his/her association and sincerely assisting in an appropriate way. Thus we will feel uplifted and inspired... If someone has lesser devotional qualities and realization we can serve that person by giving mercy and love. Then we will also feel good. One way or the other we can always serve and that's what usually resolves and offsets all the shortcomings of this world which is otherwise full of issues. I am sure, we, as practicing devotees, all have this experience that service mood works well. It might be a challenge to always keep in this mood (at least for me), but the endeavor usually pays off well.