Even if you have been with your other half for a while, you still might want to have things of your own. Nevertheless, sometimes, in a relationship, it is difficult to find the words to ask for what you want. Many couples share the things in their households, but there is nothing wrong with having one or two things that are just yours, so communicating about this with your other half and creating boundaries can be beneficial.
There is nothing wrong with wanting to have your own car or own bank account, and if you feel like you need these things, then it is important to tell your other half. He or she might surprise you with his or her own needs. Even the need for a moment alone can be something that you each need. No matter how big or small your boundaries are, they need to be discussed and agreed upon between the two of you. This way, there is no confusion, and the stress of having to share everything may not be something that you have to deal with any longer.
Now, setting boundaries doesn't always have to involve big things like money and transportation. It could be something as simple as you wanting your personal care supplies to be left alone. Either way, make sure that you communicate your needs with your other half, so they are understood. This might make your day-to-day life run more smoothly and help the two of you get along better.