Can our minds really shape our outer world? Yes, our thinking definitely affects a lot of things. If you think and believe you are unworthy (of love, prosperity, achievement etc.) your thoughts, even the random ones will reflect that, and your behaviors and choices will follow.
What we think about often enough will solidify, make a neural network in our brains (straight up science). What happens is that we essentially turn on an automatic pilot set to seek out evidence in the outer world of what we repeat internally. The Law of Abundance states that everything is possible at all times!
You may identify with my dating story. In my early years of dating I kept attracting men who would victimize me or betray me, most were unfaithful, and some were violent and abusive. I’ve shared my #metoo story about how I was raped, molested when I was little, and how shame took up residence inside me. I didn’t believe I was worthy of love, although I didn’t know that at the time, I saw myself as a victim and deep down I was terrified of intimacy. The outer world presented me with many ways to keep this story alive. I only noticed the bad boys.