The amount of time we spend with Jesus - meditating on His Word and His majesty, seeking His face - establishes our fruitfulness in the kingdom.
The Bible tells us that God will meet all our needs. He feeds the birds of the air and clothes the grass with the splendor of lilies. How much more, then, will He care for us, who are made in His image? Our only concern is to obey the heavenly Father and leave the consequences to Him.
One of Satan's most deceptive and powerful ways of defeating us is to get us to believe a lie. And the biggest lie is that there are no consequences to our own doing. Satan will give you whatever you ask for if it will lead you where he ultimately wants you.
God's plan for enlarging His kingdom is so simple - one person telling another about the Savior. Yet we're busy and full of excuses. Just remember, someone's eternal destiny is at stake. The joy you'll have when you meet that person in heaven will far exceed any discomfort you felt in sharing the gospel.