['Hello friend, I am feeling very nervous!', 'about what may I ask?', 'well you know we are going on a trip soon but we have to rely on someone else for our transportation, so I am nervous about trusting that person to not leave us hanging.', 'Is the person someone you know well, a long time friend, a family member?', 'My brother, but he is not very trustworthy. Guess I am just very nervous about the whole thing']
I would talk to your brother and let him know how concerned you are and ask him for reassurance
right now i am anxious because I have a trip planned. It's a trip where we are relying on someone else for transportation so I am very insecure about putting that much trust on another person. We are going to santa fe for a wedding.