May you know the strength of the Spirit as you walk today
May you know the peace of the Spirit as you rest today
May you know the power of the Spirit as you seek change today
May you know the source of the Spirit as you grow today.
In the order in which I came across them, my favourite Celtic books are:
Celt & Saxon - the Struggle for Britain by Peter Beresford Ellis, a refreshing look at British history
Exploring Celtic Spirituality, by Ray Simpson
Celtic Fire, by Robert van De Weyer
Celtic Daily Prayer, Northumbria Community
They are all, in my mind, worth reading, exploring, praying. I hope you enjoy them!