No matter how experienced you are, starting a new managerial job is bound to give you a butterfly or two.

The good news? Preparing yourself with a calm mindset and an effective game plan that you can implement on your very first day will guarantee you have a smooth beginning, and positive productivity from the get-go.

Use these easy, science-based tips:

Daydream yourself to success

A new Harvard University study finds that imagining a future event will go well can actually lead to a feeling of general well-being, cause you to happily remember the event later, and provide you with the positive attitude you need to succeed.

Rise early and take 10 minutes first thing on the morning of your first day of work to visualize yourself winning over your co-workers, acing your first work tasks, and communicating your ideas effectively, and you can make these goals a reality.

Lead with a smile

Once you get to the office, set the tone with your new staff by smiling sincerely at each individual as you introduce yourself.

It's the simplest advice in the world, but scientifically, smiling is the most effective way to build instant rapport, according to researchers at the University of California, Irvine.

Keep a positive rapport up as the day progresses, and you'll set the tone for good, enduring relationships.

Pitch in right away

Ask one of the veteran workers on your team if you can help with an ongoing project task, not just observe or "supervise," and then do whatever's needed. Offering to volunteer for the work others wouldn't want to do is a great way to show your humility and work ethic.

Getting into the weeds proactively will show your team you're collaborative, help you socially integrate with your staff, and prove your practicality, according to an American Friends of Tel Aviv University study.

Use natural curiosity to your advantage

Your new staff will be subtly studying your personal style in terms of the way you execute a task. Don't feel self-conscious; instead, let their natural curiosity motivate your performance.

A Johns Hopkins study finds that when you're being watched, the part of your brain that's associated with social awareness charges up your motor skills, so you actually become more efficient and effective at the work you're doing.

After work, disconnect completely

Enjoy the fact that you had an excellent first day, and don't spend the evening fretting about tomorrow.

Pursue a relaxing, fun activity instead, like watching your favorite TV show or going for a walk outside --the American Psychological Association reports it will help you shrug off any work-related worries, and help you sleep well so you're raring to go again tomorrow!