It depends which kind of meditation you do:
- Hindu (pagan) mediation focuses on a man. According to them, you are already God, you just have to realise it, therefore they clear their minds and search themselves searching for answers. One can only wonder just how demonic this is
- Christian mediation on the other hand focuses on God. You accept that you need God, so you clear your mind and focus on Him, contemplate the Trinity, the last things, the state of humanity, Scriptures… whatever is related to God
If your meditation is the pagan one, then stop doing that, repent and confess if you're Catholic or Orthodox. If it's the Christian one, then keep on doing that. It's a higher form of prayer than the vocal one, so it show that you're spritually growing