I know Trigger templates are previously discussed also in great detail. We have excellent posts available by Steve Andersen(Gokubi) and Mike Leach on the same. Here is my small journey on Triggers

• I started developing on force.com, I used bare bone approach as mentioned in Apex developer guide.

• After sometime I was  using something similar to what Steve mentioned in a blog, I was happy to see that Steve suggested a similar practice.

• Eventually tried something that is similar to what Mike suggested in a blog.

Read More: https://abhinav.fyi/yet-another-apex-trigger-template/