It's natural to desire to work on something meaningful and add value to the world. To long for a sense of purpose. Often times we tend to focus on the flashy thing, mistaking it for disruption when in fact it might only be a distraction. In order to perpetually create value it is important to keep the true meaning of disruption in mind.
The Dictionary Meaning
According to the Oxford Languages to disrupt means:
to interrupt (an event, activity, or process) by causing a disturbance or problem
Quite literally, you need to ask yourself what process or activity you care about so much that you want to make a change. After all, most great businesses start by solving a problem that you have. Your answer can be phrased as 'I am making it easier for business owners to keep their employees happy with after work activities' or possibly as 'I am making cross border payments frictionless by leveraging blockchain technology'. While the second example may seem more 'sexy' both examples can be disruptive to their target audience. The key here is to understand the process, event or activity and who you are disrupting it for. You get extra points if you are the target customer but this is not a requirement.
The Business Definition
According to Harvard Business Review a new business is disruptive if it successful in challenging established businesses by improving their products or services for their most demanding and usually most profitable customers. Key to this is that new entrants are able to target overlooked segments. As a disruptor, your goal should be to either target a low end market or a new market. 'Low end' meaning: a segment of the market that established businesses tend to overlook the needs of the customer and 'new market' meaning: a segment where your main focus is to convert non consumers into consumers.