It's good to do business by yourself, and it's better to partner with others. If you say you want to partner with your sister, it depends on your relationship with your sister. If it's not very good, choose someone else, so as not to have too many disputes and hurt your sister's feelings. Another thing is that you should think about what you do. If it is a sales-oriented industry, you must choose someone who is eloquent, good at thinking and knows how to plan as a partner, so that your business will flourish soon. Finally, it is important to find a berth. I wish you success!