Something invisible helps me walk outside

I have never walked outside by myself. There are always two people with me who walk beside me and make sure nothing has happened to me. They will never leave me alone. They will always be with me. I have no idea who they are or even what they are. But they help me and protect me.<br><br>I have never told anyone else about them. They have always helped me. I do not even know how I would even explain to someone that I need invisible help.