It's not easy. But first, ask yourself why you need a partner. In most cases you don't "need" one. If you need help with your start-up, find a mentor. You can often just pay the mentor per hour or give them some share in your business if you are short on funds. This approach is usually better than finding a partner. Partnerships are typically formed among friends, colleagues, etc. To me, it seems like you just need some general help/guidance and not a partner.

Feel free to contact me and provide some information about your start-up. Depending on what you are doing, I may be able to help you.