Hi, thank you so much for the advice!

I just need to man up and talk to them. For some reason, I'm not scared to talk to my PI. My post doc is really scary.

I can always follow protocols/ learn assays on my own. I feel like I'm really after the intellectual contribution. I have been catching up for a year and a half now. Frankly, I understand everything I'm doing. However, I don't seem to be able to come up with creative/critical contribution. I understand its too early for me, but I'm scared that it will never hit me. I aspire to do big science. I want to attend top programs like Berkeley and be a chemist/professor, but I'm scared that I lack the creativity.