The Four Noble Truths were the Buddha's first teaching after his awakening, delivered to his companions in the Deer Park at Sarnath.
How to Practice
Acknowledge: what is causing me suffering or dissatisfaction right now?
The First Noble Truth: suffering exists. Naming it begins healing.
Investigate: what am I clinging to or craving that feeds this suffering?
The Second Noble Truth: suffering has a cause, usually attachment.
Envision: what would it feel like if I let go of this attachment?
The Third Noble Truth: it is possible to end this suffering.
Act: what is one wise step I can take today toward releasing this pattern?
The Fourth Noble Truth: there is a practical path forward.