Take up anxiety – but for Krishna not for oneself
The pure devotee does not endeavor for anything which is against the principles of devotional service. For example, constructing a big building requires great energy, and a devotee does not take to such business if it does not benefit him by advancing his devotional service. He may construct a temple for the Lord, and for that he may take all kinds of anxiety, but he does not construct a big house for his personal relations.