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What's a balanced meal include? Ice cream, cookies, and a milkshake would make for a full (& delicious!) meal, but it wouldn't be balanced. Caleb eats nothing but chicken, chips and milk, and we're counting on his no-vegetable phase being temporary. A balanced meal includes a little bit of everything to keep us healthy.
In the same vein, being spiritually balanced includes different activities. Repentance is a vital part of a faithful life, but it's not the only part. We read Scripture as a way to grow and learn more about God and a faithful response to God. We should shout and rejoice and worship God, giving praise to Almighty God in response to his goodness. We go out and serve, loving others as we have been loved. A Christian life includes a little bit of everything, all oriented around God.
Don't isolate one part of the faithful life from the rest--immerse in the totality of the disciplines, recognizing how one aspect of faith enriches the next!