2 Bible Verses about Goal Setting

For what man of you designing to erect a tower, doth not first sitting down calculate the expence, if he have sufficient to complete the work? lest haply, after having laid the foundation, and being unable to finish it, all who look upon it begin to ridicule him, saying, This man began to build, and was not able to finish.read more.
Or what king, going forth to encounter another king in battle, doth not sit down first, and consult if he is able with ten thousand men to meet him who is coming against him with twenty thousand?

Instead of your saying, If the Lord pleases, and we are alive, then we will do this or that thing. But now ye glory in your proud boastings: all such glorying is wicked.