With your own submission, it could not be clear which examination you are referring to securing 59 percent marks. Possibly it may be the percentage marks of your M.Sc examination.
NET examination is conducted by CBSE twice a year ie in the month of June and December in each year for which the eligibility criteria to appear is to secure 55 percent of marks for the general candidates and for others such as OBC/ SC/ ST Economically weaker class etc suitable confession are offered in respect of eligibility criteria.
As per rough estimate, 6 lakhs of candidates appear for the NET examination on year to year basis and out of the figure mentioned 6 percent ie 36000 candidates are declared to have passed the test successful. Again there will be variance of the scores required to be successful in each subject.
Suppose for the subject, you have failed to secure the minimum cut - off, it would be better to try for the same in the next attempt so as emerge successful next time.
You do have a lot of options in the event of failure to achieve success in the NET test. You may try the following jobs.
1) Try for the Public Undertaking Jobs - Look out the post of Management - trainees, Administration appearing on the leading English - papers where in they indicate minimum of 60 percent marks in the graduation level to appear for this test. You will have to clear both for written and oral tests with your consistent labour.
2) Try for GATE with high percentile so as to absorbed in SAIL, GAIL, ONGC, DVC etc as the Mamagement trainee, Administration to be absorbed in Stores, Purchase, Inspection, Accounts etc depending upon your performance in such a test.
3) Prepare for LIC or Bank Probationary Officers Examination- In both the sectors, LIC and Banking the pattern of examination is similar at least in the written tests. You should be well versed in Mathematics right from secondary to graduation level, good command over grammar and wrillen English, Basic familiarity with English Composition and Statistics to clear the written test and in the oral test, You must have the presentation skill of the matters in the spoken English so as to impress Interview - Board. Your guidance from a professional Institute would help you to get through this test.
4) Opt for Independant Coaching in your subject - With your post graduation in Science, continue teaching in your pet subject and see how your income - graph raises with time. Form a group with the like minded enthusiasts of the different subjects and establish your own institute later on.
5) Prepare for the Civil Services Examination - Though initially it may appear to be a difficult assignment but with your devoted preparation and guidance from a professional institute such as T.I.M.E, Rao Study Circle etc, you may sail through.
6) Prepare for B.Ed - if you have the inclination for taking up the job of school - teacher, take appointment with the Principal of some high school of your locality and apprise him of your idea to coach the school students in your favourite subject and simulteneously start preparation of B.Ed. You may take up even IGNOU so that you can prepare for your subjects by studying in your convenient time.