You have the right to be forgotten, but not always
Although the GDPR has granted you the right to be forgotten (erasure of data), please note that it is not absolute. You can request the exercise of this right, e.g. in case where the data have become unnecessary for the intended purposes, the data have been processed unlawfully or you have withdrawn your consent and there is no other legal ground for their use.
Remember that in not every situation you have the right to be forgotten. This happens when a given entity (e.g. a school, a commune or a clinic) must use your data to fulfil the legal obligation which is imposed on the entity.