Getting Things Done (GTD) is probably the most popular personal agile-like process. I highly recommend reading the first book. It was a real eye opener for me,

Getting Things Done (GTD) is probably the most popular personal agile-like process. I highly recommend reading the first book. It was a real eye opener for me, but beware: it is easy for people to get too focused on optimizing their "perfect" GTD system and tools. Just keep it simple. :)