Don't give up - Just Do It
'If you are poor, work. If you are rich, work. If you are burdened with un-seemingly unfair responsibilities, work. If disappointments come, work. If sorrow overwhelms you and loved ones seem not true, work. If health is threatened, work. When dreams are shattered and hope seems dead, work. Work as if your life is in peril. It really is. No matter what ails you, work. Work faithfully. Work in faith. Work is the great remedy available for both mental and physical afflictions'.
In engineering quite often one faces apparent failures. Deadlines long past, Budgets over run, Technoloy not panning out and bosses baying for blood. It is important to 'Stick to it'.
Just do not give up.