Don't let them do it!
Don't let ANYONE discourage you from what you know God is telling you to do.
People are people. People haven't changed for thousands of years -- maybe we could even say from the beginning of time. Our problems and challenges might appear in different form (no one in Bible times, for example, had any internet issues), but they are essentially the same.
"That which has been is that which will be, And that which has been done is that which will be done. So, there is nothing new under the sun." Ecclesiastes 1:9
The exciting thing about the above verse is that people have seen God's overcoming power and love triumph in all different situations. You can too.
And it gets down to a simple question: will you or won't you? Will you follow God or won't you? Will you go where He has asked you to go? Do what He's asked you to do? Say what He's given you to say? Or will you say no?
People often are used either by their own flesh or the enemy to get in the way of God in your life. Don't let them.
Think of Peter and Jesus. In one breath Peter proclaimed Jesus to be the Messiah. In the next breath he put his agenda on Jesus' future rather than God's. Jesus replied by saying, "Get behind me Satan.""
If you feel very much pressured by others to not follow God in that radical crazy way He is calling you too, you could always follow Jesus'example and shout, "Get behind me Satan!"
It will sure get their attention.