The New Frontier & Great Society were extremely successful in building up the US's infrastructure, scientific technology, and other aspects of the U.S. Each program has been able to benefit the U.S. public one way or another.
Great Society Program:
The GSP was extremely successful in conserving nature, building up the U.S's infrastructures, providing national healthcare & benefits, and pouring resources into the U.S. education system. Examples of these benefits can be found in the programs passed, including the Medicaid (1965), which provided  healthcare benefits to lower income families. Medicaid (& later Medicare), is still being used up until recently, and bits and parts are still used in today's world. Allowing for cheaper and beneficial medicare for the average allows for the freeing up of funds to be spent somewhere else. Another act that was aimed more towards building up the lower-income bracket families is the Higher-Education Act (1965), which allowed for scholarships and loans to lower-income households to be able to send their children (or to go to college themselves). The aim for this act is that with higher education & a degree, citizens of the U.S. is able to get/fill in higher-paying jobs, which in turn raise the U.S. GDP Index as a whole. Finally, Project Head-Start (1965), was aimed at helping the US GDP grow from an early age. Remember, higher educational level usually led to degrees, which in turn led to more people being able to fill in higher-paying jobs, which would in turn affect the GDP as a whole for the better.
All of these are aimed to help improve the internal conditions of the U.S. as a whole.
New Frontier:
The New Frontier was created by the Kennedy Administration, and was aimed at building up internal conditions & foreign relations. For example, the Peace Corps (1961), was created to send US citizens abroad to help under-developed countries (3rd world countries) to transition for the better. It was also a more peaceful way to bring countries into the U.S. sphere of influence & under democracy. With the creation of the Peace Corps, however, Kennedy saw the need to increase spending on the military, augumenting the funding of the military to allow for research for new military hardware and implementation funding for such. Like Johnson after him, he worked to help improve the U.S.'s economy, and created bills that helped the poor & less-fortunate people. He also created N.A.S.A, which led in the US in Space Exploration, discovering not only new information about the world outside, but also landing the first man on the moon. Later on the ISS was created, which brought the world together to explore the universe together.
Unlike the GSP, the NF was created to help improve external relations with other countries, in hopes of, at first, staving off the spread of communism, and later on, to open up the U.S. for cordial relations with Communist nations.
Both were fairly, if not, really successful in meeting the objectives that they have set. However, that is not to say that there may not be more improvements, but as for what they knew, and the conditions they lived in during that time, I believe that they did their best to make the world not only a better place to live in, but also worked to help expand our knowledge of the world and her surroundings.
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