A tripping breaker is a protective device doing its job. It has cut power because the circuit saw more current than it should carry or detected a fault. Your task is to find out which, so the right person can act on it. The typical service life of the panel is on the electrical panel page, but age alone does not explain a trip.
Stop if something is wrong
If you notice a burning smell, scorching on an outlet or plug, a warm breaker or panel, or sparking, turn off what you can safely reach and call a licensed electrician. Do not open the panel to investigate. Do not replace a breaker yourself.
Write down what happens
Note which breaker trips, what time it happens, and what was running at the moment. Write down whether the trip started after you added a device or after an appliance was used heavily. A pattern in the notes is the most useful thing you can give an electrician.
Separate the device from the circuit
Unplug everything on the circuit, reset the breaker, and see whether it holds. Then add devices one at a time. If one device trips the breaker by itself, the trip points to that device. If the breaker holds with a few devices and trips when several run together, the trip points to the circuit's load. Those are different problems with different fixes.
Know what the answer changes
A device that trips the breaker alone is a repair or replacement question for that device. A circuit that trips under combined load is a question about the circuit and the panel, and it belongs to a licensed electrician. Ask the electrician to tell you in writing what was found, what was changed, and what was left as it was. Keep that record with your house file, along with the install year of the panel.