how do you stop a 'tell me about yourself' answer from turning into a five minute ramble?

Every time I get asked this I start reasonably focused and then somehow end up narrating my entire career history including a job I had for four months in 2019. Tried writing a script beforehand but reading it back sounds stiff and rehearsed. Anyone actually solved this or is a slightly-too-long answer just something recruiters expect at this point?