To illicit the greatest of changes, you must create a paradigm shift...you have to change the way you view things, and this will change the way you feel and react...according to Stephen R. Covey.
So let me share my view and interpretation of how I would view these things that you fear:
I feel as though I'm too self-conscious at the gym. I'm pretty skinny to begin with which is the reason I go to the gym in the first place - to bulk up. However, I feel like everyone is frowning at me anyway. See, the gym I go to is sponsored by our local community college, so many local athletes are there. Most of who are already in good shape, and around 6 foot or more. Whereas, I'm only 5'7, skinny, and I'm Asian, so I feel like my ethnicity makes me stick out. We are a VERY small community, 6700 people, so seeing lots of different ethnicities at the gym is somewhat of a rarity, I've concluded.
Who cares?
So I feel like I'm being judged whenever I work out and therefore, I can't focus on my work out as much. I also have a phobia of going to a certain machine if someone else is on the machine next to it which often prevents me from doing some of the machines I need to do. Also, I am very self-conscious whenever I go to take the weights off a machine that someone else didn't take off when they left it. Sometimes they use VERY heavy plates for the leg press, and don't take them off and they're like ten times bigger than me, so I struggle to get it off, and I feel slightly embarrassed.
So what?
Now, granted, these are not necessarily the correct way to view things, as if there WERE a correct way...
lmao
Well let me level with you -- I am in almost the same predicament as you. I train at a community college, in a pretty small weight room. I am a 5'11" Asian male who started training at around 140-150 lbs. I am constantly in the proximity of highly athletic and strong people, who aren't always the most modest people around. I won't say that I'm the only Asian dude in the weight room, but I'm probably in the vast pool of 2 that I've ever seen in a year and a half of constant training.
So, anyway, I don't let any of this get to me. Why? Because I've been humbled. I'm humbled because of the fact that I challenge myself and sometimes fail. Because I have been humbled, I don't feed off my pride and ego. The problem with not just big guys, but small guys like yourself and others I have known, is that they don't want to risk being seen...being humbled by someone else. Deny all you want, but that's really what it comes down to...ego, and pride. Without it, you wouldn't give a **** if others are judging you. You wouldn't care about petty things like how much weight the other guy does. All that matters is the weight you are doing beacuse you are there to work hard. Now let me say again that I was humbled, and still am constantly humbled, but the difference between me and some others who let that get in the way of their goals enough to where they just leave the weight room...is all the difference in the world.
You have to decide for yourself whether or not you're going to let your ego get in the way, or if you're going to power through and become something and someone better.