Bodhisatva,
Its OK to have aggressive thoughts toward others. When we have clinging to events, such as the opportunities you were frustrated that you didn’t get to take, its natural to be unsettled by them. As you continue to let go of the clinging, the jealous thoughts stop arising.
One of the qualities of a bodhisattva is equanimity. This is often visualized as a lighthouse shining on a shoreline. When the sea is calm and the night quiet, there it rests shining its light. When the sea is stormy and the night raging, there it rests shining its light. With only having a few months of intention behind your stability, it is very usual and natural to not be quite that consistently radiant. It doesn’t undermine the work you’ve been doing, they’re just thoughts. Try not to buy into them… they don’t have to define who you become, they are a result of who you were.
Do you do metta? Consider choosing one of the difficult people as your benefactor of metta, it will help with the mental agitation surrounding them. If you dont intentionally cultivate metta, consider trying! Namaste.
With warmth,
Matt