I have felt like that. In fact, sometimes it has felt like someone is holding that "you have to be this tall" measuring stick to me (like at the amusement park) and based on the judgement of the one holding the stick, I may or may not be allowed to pass.
Reminds me of the Israelites who were feeling alittle convicted of their self interests, so they returned to work on rebuilding the temple...
"The people feared the presence of the Lord . . . and they came and worked on the house of the Lord of hosts, their God” (Haggai 1:12, 14).
As the foundation of the temple began to go up, something went wrong, the older people began to cry. They had remembered what Solomon's temple from 68 years ago looked like and this new temple just was not measuring up; which brought great discouragement to the point of giving up.
Too many of God’s children are being discouraged today and giving up because they think they do not measure up. All they see is that measuring stick that says "not good enough - Do not enter!"
Like the Israelites, even though we are trying to put God first and build His house, we just don't feel wise enough, good enough, strong enough. Instead of keeping on, we throw in the towel and miss out on what God has called us to do and we lose out on who He has created us to be.
We cannot always measure up to everyone's standard, but when we apply God's measuring stick, we will always be accepted and be enough for Him!