Concentration of the mind is in a way common to both Knowledge and Yoga. Yoga aims at union of the individual with the universal, the Reality. This Reality cannot be new. It must exist even now, and it does exist.
Meditation is sticking to one thought. That single thought keeps away other thoughts; distraction of mind is a sign of its weakness; by constant meditation it gains strength.
If you hold this feeling of ‘I’ long enough and strongly enough, the false ‘I’ will vanish leaving only the unbroken awareness of the real, immanent ‘I’, consciousness itself.
You and I are the same. What I have done is surely possible for all. You are the Self now and can never be anything else. Throw your worries to the wind, turn within and find Peace.