The idea of HODL is entirely up to you and your greed level. If you wish to have trust in the project, then, its entirely up to you.
Until when do you have the mindset that holding bitcoins is greed?
I don't think holding is greed because they have their own targets for a certain period of time before taking profits. Being a holder is a good option to expect a commensurate return, so it is not true that holding is greed even if they expect higher returns. If you understand that investing takes time to pay off, then you shouldn't say that holding is greed.