How Inaccurate Assumptions Define Your Reality

Projection, insecurity, and the relational loops of self-sabotage

We all make assumptions. It’s how the brain works, always scanning, sorting, assigning meaning. It’s automatic. We assume the car in front of us is being driven by an idiot. We assume the person talking loudly on their phone in public is selfish and unboundaried (oops, I do this, it annoys me so much). We assume our partner doesn’t care if they don’t do something. We assume we don’t belong or don’t fit in if we can’t relate to a topic being discussed in a group. We assume someone doesn’t like us if we’re not invited. We assume someone’s tone over text means they’re mad. We assume silence means rejection. We assume attention means love. We even make assumptions about complete strangers on the internet. You’re probably doing it right now, making assumptions about me as you read this. We assume, we assume, we assume.

But the issue isn’t only that we might be wrong. The real problem is what we do with the assumption, how quickly we use it to fill in the blanks, to create a story, to paint an entire character portrait of the people in our lives. We don’t just make assumptions, we turn them into conclusions. And most of those conclusions aren’t rooted in objective truth. They’re rooted in our own unresolved insecurities, our history, and the protective structure of the ego.

Assumption Creates Reality

Then we live inside them. We move through the world as if the assumption is fact. It shapes how we act, what we say, what we avoid, what we believe, what we feel. It doesn’t just influence our reality. It becomes our reality. Because if we are living based upon assumption, and those assumptions are shaping what we do, then we are acting in ways that confirm those assumptions. And the crazy part is, once we start acting in alignment with our assumptions the chances are that we will end up eliciting responses from others that are aligned with our assumptions grow.

For example, if you assume your partner doesn’t care because they forgot something, you might withdraw. You won’t remind them. You’ll feel disconnected. You might even spiral and start doubting the relationship. You’ll get moody. Your partner will pick up on it and either mirror your distance or approach you with their own guardedness. And now you definitely feel disconnected.

Or take a common group dynamic. You start feeling disconnected, so you shut down. You go quiet, you pull back, you make yourself smaller. You feel invisible, and because you’re less available, people naturally engage you less. Then you feel even more invisible. The assumption hardens into “they don’t care” or “I don’t fit in,” and it starts to feel like proof, when really it’s the feedback loop you helped create.

This is usually a layered process: insecurity → assumption → defensive behavior → relational shift → “proof.” And the key piece, especially in relationships, is that it feels real. The emotional experience is real. But the story may not be.

The Psychology of Assumption

When we talk about assumptions creating reality, we’re not talking about magic thinking. We’re talking about a very predictable psychological process.