Toast your bread slices in a toaster (or frying pan with a bit of butter, if you don't have one).
In a bowl, mash your avocado with a fork, and add the lime juice and olive oil.
Spread the avocado mixture on the bread, wash the strawberries, cut them in half and place them on top.
Then add a few flax seeds, a drizzle of honey and some pistachios that you've crushed in a mortar (improvise if you don't have one: you can put them in a towel, for example, and tap them with a rolling pin).
Notes
Warning: the buttercups in these photos are not edible and are poisonous. I realized this after I'd taken the photos and removed them from the toast!