Daily devotionals can keep a believer grounded. Believe me. I know that from personal experience.
Some years back, when i really started taking my Christian walk seriously, I got wind of My Utmost for His Highest by Oswald Chambers. It changed my entire approach to my daily encounters and interactions as a Christian. I began to have Chambers’ words mixed with tidbits of the Scriptures on my heart and mind as well as on the tip of my tongue as I went through my day. It made a major difference in how I dealt with people. I began to have a different experience with others as I continued my daily readings and reflections.
Visit Crosswalk’s devotional section and see what it has to offer. I also like C.H. Spurgeon’s Faith’s Checkbook as another option for devotional reading.