Can I lose my salvation?
There is a fear beneath this question, and I want to sit with it a moment before I answer, because the fear itself is worth understanding. Many have been taught that salvation is a fragile possession, granted on condition and revoked on failure—a status you might drop like a coin through a hole in your pocket. But hear what this fear assumes: that you were once separate from God, brought near by a transaction, and could be cast out again.
I do not believe that is what Jesus revealed. He spoke of a kingdom already present: "The kingdom of God is within you" (Luke 17:21, KJV). Salvation, then, is not a possession that comes and goes; it is an awakening to what is eternally true—that you are the image and likeness of God, inseparable from your Source as a wave is inseparable from the sea. "I and my Father are one" (John 10:30, KJV), Jesus said, and he taught that same union as the birthright of all.
Can you lose union with the God who is your very being? A wave cannot fall out of the ocean. What you can lose—for a time—is the awareness of that union, falling back asleep to your true nature. This is what the parable of the prodigal shows: the son wandered far, but the father's love never wavered, and the moment he turned homeward he was met with running feet (Luke 15:20, KJV). He was never disinherited; he had only forgotten whose he was.
The Gospel of Thomas puts it plainly: "If you bring forth what is within you, what you bring forth will save you" (Gospel of Thomas 45.29-31). Salvation is recognition, not reward. So no—I do not believe you can lose what God unchangingly is toward you. You can wander, you can forget, you can sleep—but the returning is always open, and the Father is always already running to meet you. If this fear was planted in you by a particular teaching, I would gladly sit with that with you.