Self-imposed (adjective)

1. Imposed or established by oneself, without external influence or coercion.
2. Imposed as a result of one's own actions or choices.

Origin:

Composed of the word "self" meaning "oneself" and "imposed" meaning "to establish or enforce something by authority".

Examples:

1. The prison term was self-imposed, as he turned himself in for the crime.
2. The athlete's rigorous training schedule was self-imposed in an effort to improve her performance.
3. The artist's strict deadline for the completion of the work was self-imposed.
4. The businessman's long hours were self-imposed, as he was driven to succeed.
5. The dieter's self-imposed restrictions made it difficult for her to stick to her plan.