Anyone looking to get into IB, or specifically trying to intern at LGA, needs to be self-motivated. You need to know that IB is what you're wanting to do out of undergrad and strive to learn as much as you can. You need to develop a thick skin and have a "get it done no matter what" mentality. If you do these things you will be successful at LGA. The more you do, the more confident you will become. Don't beat yourself up and just keep pushing forward.