Beginning again and again is the actual practice, not a problem to be overcome.
How centered are you right now? Are we ever completely centered, or centered for very long? The more I teach and practice centering myself in this life, the more I'm pretty sure (at least for me) that being centered is really a continual RE-centering process.
Life is always changing, as difficulty and conflict arise and recede. The continuous losing and coming back to center is natural. There may not be a Perfect Center. Only Centering, as we make continual little adjustments and return again and again--a natural and beautiful part of what it means to be human and to be aware.
So let's practice....