This is voiced in different ways and times by many of us. I believe the answer is found in the way the question is stated. We create our life. Every aspect of it is influenced and brought forth by our feelings, which, if felt often enough, become hard wired into our brain and turn into thoughts, which if thought about frequently enough, feel like "truths", and thus seem impossible to change. It is chemistry and the process needn't be fully understood to change it.
It will take an unshakable belief to head off this process of creating "alone for the rest of my life". It will take falling in love with yourself without condition. It will take a new feeling, one of "I will find love", thought often enough until it becomes a belief. She or he could be anywhere! Don't go out unless you are dressed to meet the love of your life! Look everyone in the eyes, that is where we meet at the soul level. Do not hide your light or your love. How will she or he find you if you are hiding?
Our words are powerful and as we speak and write of our pain, it only continues. Speak, write and watch only what brings you to a place of "I feel lovable". The rest of us will notice and agree!
If you are looking for more specifics, there is this great book by Joe Dispenza called "Breaking the Habit of Being Yourself"; it is filled with tools to use to create the life you want.
You are perfect, right now. Feel it, believe it and you will see lots of things change. This is where we find love. In our very own hearts.