I can keep you alive for 2 to 3 years

This is what my oncologist told me when all the scan reports came back in. Wow, terminal, cancer, dying. What is it like? It's weird actually. Feeling really decent but having to tell my family that I'm dying. Who do I tell? Are the children old enough to know the whole truth? Many decisions to make. Stage 4 metastatic breast cancer. One tumor 9 mm in the brain, weird, no symptoms. Crying, desperate for something good.