How to avoid overuse of "I" sentences in first-person narration?

[WJ]

I prefer to write in first-person, but have noticed that too many of my sentences start with "I".

[CaEdTique]

Look at the middle of your sentence - can you restate it starting with the middle?

Ex. I love to visit the fairs and festivals that run all through the warm season.
Instead: So many fairs and festivals fill each weekend of the warm season.

[Bob]

Julius Caesar solved this problem by always referring to himself in the third person.

But seriously, over-use of pronouns can be avoided by cutting to the core of the sentence instead of narrating. Example:- 'I saw unusual footprints in the mud' can be narrated as 'There were unusual footprints in the mud'. Even interior actions can be treated this way, to remove the repetition of 'I' as well as providing a more dynamic narrative:- 'I was shocked to see what happened next.' could simply be omitted and 'what happened next' described as it was observed, as a third-person event.

[Verena]

Even when one writes in the third person it can happen that each sentence starts with "she" or "he". Bob described it nicely - sometimes you just need to be creative with your sentences and shuffle them a bit.

[Vidyut]

"I saw something inexplicable" >> "What was that?"
"I ate dinner, watched TV and I was still waiting before I gave up..." >> "Dinner, check. TV, check. 1 bottle of wine *hic* How much longer? Time for bed."

Describe what you experience, encounter and witness rather than yourself.

"I went for my evening walk, there were trees, my neighbour...." can turn into "Today's evening walk was to Market Name. The trees did whatever they did and Jane, in flat number next door...."