Don't let the idea of hosting a party turn you into a nervous wreck. With a little prior planning you can throw the perfect party every time.

Plan the type of party you would like to have: Do you want a cocktail party or a dinner party? Do you want the meal to be formal or casual? Will the food be served at the table or will you offer a buffet? The answers to these types of questions will help you determine the number of people to invite, as well as who those people should be. For example, you wouldn't want to invite acquaintances that do not get along well if the party will be more intimate and there will not be many other people there for them to interact with. The answers to these questions will also help you decide upon the menu later. Start a party journal and write the answers to these questions in it.
Plan the guest list. Invitations should be mailed approximately three weeks prior to the date of the party. Write down the names of all invitees in your party journal, leaving a space for their RSVP. This way you will know at a glance how many guests you are expecting. Choose your RSVP deadline carefully, making sure to allow enough time to properly plan the menu. Keep in mind that many people overlook RSVP deadlines. If your deadline passes and there are people you have not heard from, consider your situation in deciding what to do. If your party is a more casual open-house type event, simply plan for everyone to attend to make sure you have enough for all who show up. However, if your party is a more formal affair and you need to know how many places to set at the table, you may want to consider following up with a telephone call. If you choose to call, keep the conversation casual and upbeat. Do not offend your guests by pointing out that they missed the deadline to respond. Simply try to ascertain the answer to your question through casual conversation.
Plan the menu. When planning the menu, try to choose as many dishes that can be prepared ahead of time as possible. Choose dishes that fit well with the theme of your party. If you are having a cocktail party you will only need appetizers and you will want to choose foods that do not require a plate or utensils to eat. This will allow your guests the ability to mingle easily without trying to juggle a plate in one hand and a drink in the other. If you are offering a sit down meal you may opt for more elegant dishes. Keep in mind that you can still achieve elegance without spending days in the kitchen. Visit http://www.tips-to-organize-life.com/easy-meal-idea.html for ideas to help you plan your menu. Many of these dishes can be prepared in advance and some are actually better that way. Write down your menu selections in your party journal and make note of any preparation instructions that will help you determine when to get started on each dish.
Plan the setup for the party. Will you need to set the table and, if so, for how many? Which tablecloth, napkins, dishes and centerpiece would you like to use? Do you need to purchase disposable cocktail plates and napkins? Write all of this information in your journal so that all of the thinking is done ahead of time.
Plan the party calendar. Start one week prior to the event and write down any tasks that can be accomplished each day leading up to the day of the event. The idea is to leave as little as possible for the day of the party, allowing yourself time to relax, get dressed and get excited for your guests to arrive without running around trying to get everything done at the last minute. The calendar should include things such as shopping for paper goods and decorations, grocery shopping, house cleaning, setting the table, and menu preparations. If you do a little bit each day you will be ready for your party before you know it.

Talk to a friend about your ideas like the theme, what should you wear, how much to spend on food etc. Sometimes you can learn a lot from people's experiences.
Be confident. Remember you are giving the party to enjoy yourself.