To see a baby being baptized in your dream represents renewal, a new way of being, a new attitude toward life, or a new approach toward others.
To dream that you are being baptized suggests that your sins and impure thoughts are being washed away. Perhaps you are feeling guilty about something that you have done and are seeking forgiveness. Immersion in water represents death, whereas emergence signifies resurrection. You need to let go of your old negative self, so that the new you can emerge and be successful.
On a spiritual note, this dream signifies your renewed faith in God and that you are coming closer to self-realization and spiritual fulfillment.