We all need help but it is often hard to ask for help. Often the way to start asking is by complimenting the other person. This makes sure they are in more of a positive state and more likely to say yes. The next thing is to make sure they know how much it means to you. The person will want to know what they are going to get out of it so let them know. Let them know that the favor will not be for nothing. Tell them the larger impact that this one thing will do. If there is hesitancy on their part do everything you can to know down their objections with positives. Be strong and confident in your ask.