Thank you for your question about a fungus on your fingers and toes, that you have had for the last 20 years.
Your whole body is a living thing and has many layers to the life and energy that makes up the whole of you.
What I am not clear on is what aspect to the fungus is coursing you the problem. Could you post a photo of the problem or describe it in more detail?
If you have lived with this problem for 20 years have you ever thought of just loving it as a part of yourself and just letting it be? As your whole body is alive and a living thing not unlike a fungus under a different name: I am not sure what it is that courses you describe this part of yourself as a fungus? Is it unsightly? Is it eating your flesh? Any further detail you can give would really help me to decide how to suggest a remedy to your discomfort.