A railway carriage is not really worth much on its own. I'm not talking about its material value, but its usefulness. It only comes into its own when it is combined with others and pulled or pushed by a locomotive. Then, however, it is very valuable and useful: it protects travellers, offers them space and comfort and can be built into train compositions. It is of little use in isolation because it is not able to drive itself. There are also moments in our lives when we have to accept our limits and our limited influence or restricted possibilities. Nevertheless, they are not worthless, but can achieve their full effect again under the right conditions. As little as the railway carriage complains about its lack of autonomy, you should not be annoyed about your limited possibilities. Refrain from wanting to be a locomotive when you are a railway carriage.
I wish you an extraordinary day!