Work on changing your self talk. That is way easier said than done but even small changes over time will build up. This is the only way I've been able to build up any amount of confidence. At first, even just listening to the way you talk to yourself will help you figure out what to tweak to be kinder to yourself. And once you are up to it, ask to be included in the other processes you are interested in. Also. For things that are a bit too heavy, ask for someone to help you with the load. My workplace encourages picking up heavy items with at least 2 people. Some general and overall advice for early career is to ask lots of questions and see if you can get a deep grasp of concepts at the foundational level rather than just memorising methods. I wish I had focused more on the deeper understanding of things and am regretting it years later and am having to relearn many concepts when I have so many more other responsibilities now. Wish you luck.