There are always two spirits at work: the Holy Ghost and a satanic or false spirit. Witchcraft comes from a satanic spirit and opposes God's Spirit.
Meditation can be a godly practice, but can also express the exact opposite connotation. Nonbelievers go to great lengths to push their concept of meditation upon the world, but their meditation remains ungodly in every aspect. Rather than asking whether or not we should meditate, we should ask upon what we should meditate. Perhaps the Christian’s most important question in this matter should be, “Is my meditation pleasing to the Lord?” Interestingly, David, a man after God’s own heart (Acts 13:22), prayed, “Let the words of my mouth, and the meditation of my heart, be acceptable in thy sight, O LORD” (Psalm 19:14). David wanted to insure that his meditation was acceptable to the Lord.
