Looking for some life inspiration during this July 4th week? Two top CEOs have a few tips on how to get ahead. 

Republic Services CEO Donald Slager

Slager started in the waste management industry as a teenager. More than 35 years later, Slager is the CEO of the second largest waste management company in the U.S. in Republic Services (RSG - Get Report) .

His tips to making it happen. Get to work. 

"Do the job you have well and if you do the job you have well, someone is going to come around and ask you to do the next job," Slager tells TheStreet. Slager also suggests being flexible and hanging in there when times are tough (as they so often are in business). 

Norwegian Cruise Line CEO Frank Del Rio 

Del Rio is a rarity. He is the the last person to have founded a cruise line company in Oceania and Regent Seven Seas, which he sold to Norwegian Cruise Line (NCLH - Get Report) in 2014. 

Del Rio, known as one of the industry's foremost experts, is now Norwegian's CEO. His advice for landing the top C-suite job is to stay hungry. 

"Never ever give up," Del Rio tells TheStreet. "Time is of the essence, you have to have a sense of urgency." 

Need more inspiration? Here's what Boeing's (BA - Get Report) CEO Dennis Muilenburg said about new jobs in the aerospace industry.

Be sure to check out "7 things investors must know". You can p rep your portfolio for 2018 and beyond with these tips from our experts. Just click here!

Keep the Holiday Week Going! Red, White and Cramer 

Need a little more inspiration?   Be sure to watch the entire Jim Cramer's 25 Rules For Investing!  It's a great way to get on the road to financial independence this 4th of July.

or catch a few more of Jim's Rules here: